Implemented the missing Database endpoints (#8)

This PR contains the work done to declare the missing, non-GET endpoints of the *Database* section in the [Discogs API documentation](https://www.discogs.com/developers#page:database) into the `OpenAPI` specification document.

Furthermore, documentation extensions have been defined for the `APIProtocol` and `Client` types in the `DocC` documentation catalog to match the categories of these endpoint calls to the categories in the Discogs documentation.

Reviewed-on: #8
Co-authored-by: Javier Cicchelli <javier@rock-n-code.com>
Co-committed-by: Javier Cicchelli <javier@rock-n-code.com>

docs/data/documentation/discogsservice/components/schemas/release/title.json

@@ -1 +1 @@
-{"sections":[],"metadata":{"role":"symbol","symbolKind":"property","modules":[{"name":"DiscogsService"}],"fragments":[{"text":"var","kind":"keyword"},{"text":" ","kind":"text"},{"text":"title","kind":"identifier"},{"kind":"text","text":": "},{"kind":"typeIdentifier","preciseIdentifier":"s:SS","text":"String"}],"roleHeading":"Instance Property","externalID":"s:14DiscogsService10ComponentsO7SchemasO7ReleaseV5titleSSvp","title":"title"},"identifier":{"interfaceLanguage":"swift","url":"doc:\/\/DiscogsService\/documentation\/DiscogsService\/Components\/Schemas\/Release\/title"},"primaryContentSections":[{"declarations":[{"tokens":[{"text":"var","kind":"keyword"},{"kind":"text","text":" "},{"kind":"identifier","text":"title"},{"kind":"text","text":": "},{"preciseIdentifier":"s:SS","kind":"typeIdentifier","text":"String"}],"languages":["swift"],"platforms":["macOS"]}],"kind":"declarations"},{"content":[{"level":2,"anchor":"discussion","type":"heading","text":"Discussion"},{"name":"Remark","type":"aside","content":[{"inlineContent":[{"text":"Generated from ","type":"text"},{"code":"#\/components\/schemas\/Release\/title","type":"codeVoice"},{"text":".","type":"text"}],"type":"paragraph"}],"style":"note"}],"kind":"content"}],"kind":"symbol","abstract":[{"type":"text","text":"A title of a release."}],"hierarchy":{"paths":[["doc:\/\/DiscogsService\/documentation\/DiscogsService","doc:\/\/DiscogsService\/documentation\/DiscogsService\/Components","doc:\/\/DiscogsService\/documentation\/DiscogsService\/Components\/Schemas","doc:\/\/DiscogsService\/documentation\/DiscogsService\/Components\/Schemas\/Release"]]},"schemaVersion":{"patch":0,"major":0,"minor":3},"variants":[{"paths":["\/documentation\/discogsservice\/components\/schemas\/release\/title"],"traits":[{"interfaceLanguage":"swift"}]}],"references":{"doc://DiscogsService/documentation/DiscogsService/Components/Schemas":{"url":"\/documentation\/discogsservice\/components\/schemas","identifier":"doc:\/\/DiscogsService\/documentation\/DiscogsService\/Components\/Schemas","role":"symbol","navigatorTitle":[{"kind":"identifier","text":"Schemas"}],"kind":"symbol","title":"Components.Schemas","abstract":[{"type":"text","text":"Types generated from the "},{"type":"codeVoice","code":"#\/components\/schemas"},{"type":"text","text":" section of the OpenAPI document."}],"fragments":[{"kind":"keyword","text":"enum"},{"kind":"text","text":" "},{"kind":"identifier","text":"Schemas"}],"type":"topic"},"doc://DiscogsService/documentation/DiscogsService/Components/Schemas/Release/title":{"kind":"symbol","identifier":"doc:\/\/DiscogsService\/documentation\/DiscogsService\/Components\/Schemas\/Release\/title","abstract":[{"text":"A title of a release.","type":"text"}],"type":"topic","role":"symbol","fragments":[{"text":"var","kind":"keyword"},{"text":" ","kind":"text"},{"text":"title","kind":"identifier"},{"kind":"text","text":": "},{"kind":"typeIdentifier","preciseIdentifier":"s:SS","text":"String"}],"title":"title","url":"\/documentation\/discogsservice\/components\/schemas\/release\/title"},"doc://DiscogsService/documentation/DiscogsService/Components/Schemas/Release":{"url":"\/documentation\/discogsservice\/components\/schemas\/release","identifier":"doc:\/\/DiscogsService\/documentation\/DiscogsService\/Components\/Schemas\/Release","role":"symbol","navigatorTitle":[{"kind":"identifier","text":"Release"}],"kind":"symbol","title":"Components.Schemas.Release","abstract":[{"text":"A type that eepresents a particular physical or digital object released by one or more artists.","type":"text"}],"fragments":[{"kind":"keyword","text":"struct"},{"kind":"text","text":" "},{"kind":"identifier","text":"Release"}],"type":"topic"},"doc://DiscogsService/documentation/DiscogsService/Components":{"url":"\/documentation\/discogsservice\/components","title":"Components","role":"symbol","abstract":[{"type":"text","text":"Types generated from the components section of the OpenAPI document."}],"type":"topic","fragments":[{"kind":"keyword","text":"enum"},{"text":" ","kind":"text"},{"text":"Components","kind":"identifier"}],"identifier":"doc:\/\/DiscogsService\/documentation\/DiscogsService\/Components","navigatorTitle":[{"kind":"identifier","text":"Components"}],"kind":"symbol"},"doc://DiscogsService/documentation/DiscogsService":{"title":"DiscogsService","url":"\/documentation\/discogsservice","type":"topic","role":"collection","abstract":[],"kind":"symbol","identifier":"doc:\/\/DiscogsService\/documentation\/DiscogsService"}}}
+{"sections":[],"schemaVersion":{"major":0,"minor":3,"patch":0},"hierarchy":{"paths":[["doc:\/\/DiscogsService\/documentation\/DiscogsService","doc:\/\/DiscogsService\/documentation\/DiscogsService\/Components","doc:\/\/DiscogsService\/documentation\/DiscogsService\/Components\/Schemas","doc:\/\/DiscogsService\/documentation\/DiscogsService\/Components\/Schemas\/Release"]]},"primaryContentSections":[{"kind":"declarations","declarations":[{"platforms":["macOS"],"languages":["swift"],"tokens":[{"kind":"keyword","text":"var"},{"kind":"text","text":" "},{"kind":"identifier","text":"title"},{"kind":"text","text":": "},{"kind":"typeIdentifier","preciseIdentifier":"s:SS","text":"String"}]}]},{"kind":"content","content":[{"level":2,"type":"heading","text":"Discussion","anchor":"discussion"},{"name":"Remark","type":"aside","content":[{"type":"paragraph","inlineContent":[{"text":"Generated from ","type":"text"},{"type":"codeVoice","code":"#\/components\/schemas\/Release\/title"},{"text":".","type":"text"}]}],"style":"note"}]}],"identifier":{"interfaceLanguage":"swift","url":"doc:\/\/DiscogsService\/documentation\/DiscogsService\/Components\/Schemas\/Release\/title"},"kind":"symbol","abstract":[{"text":"A title of a release.","type":"text"}],"metadata":{"role":"symbol","fragments":[{"kind":"keyword","text":"var"},{"kind":"text","text":" "},{"kind":"identifier","text":"title"},{"kind":"text","text":": "},{"kind":"typeIdentifier","preciseIdentifier":"s:SS","text":"String"}],"externalID":"s:14DiscogsService10ComponentsO7SchemasO7ReleaseV5titleSSvp","modules":[{"name":"DiscogsService"}],"title":"title","symbolKind":"property","roleHeading":"Instance Property"},"variants":[{"traits":[{"interfaceLanguage":"swift"}],"paths":["\/documentation\/discogsservice\/components\/schemas\/release\/title"]}],"references":{"doc://DiscogsService/documentation/DiscogsService/Components/Schemas/Release":{"type":"topic","abstract":[{"type":"text","text":"A type that eepresents a particular physical or digital object released by one or more artists."}],"identifier":"doc:\/\/DiscogsService\/documentation\/DiscogsService\/Components\/Schemas\/Release","title":"Components.Schemas.Release","navigatorTitle":[{"text":"Release","kind":"identifier"}],"kind":"symbol","url":"\/documentation\/discogsservice\/components\/schemas\/release","role":"symbol","fragments":[{"kind":"keyword","text":"struct"},{"text":" ","kind":"text"},{"kind":"identifier","text":"Release"}]},"doc://DiscogsService/documentation/DiscogsService":{"type":"topic","title":"DiscogsService","url":"\/documentation\/discogsservice","role":"collection","abstract":[],"kind":"symbol","identifier":"doc:\/\/DiscogsService\/documentation\/DiscogsService"},"doc://DiscogsService/documentation/DiscogsService/Components/Schemas":{"type":"topic","title":"Components.Schemas","identifier":"doc:\/\/DiscogsService\/documentation\/DiscogsService\/Components\/Schemas","abstract":[{"type":"text","text":"Types generated from the "},{"type":"codeVoice","code":"#\/components\/schemas"},{"type":"text","text":" section of the OpenAPI document."}],"navigatorTitle":[{"text":"Schemas","kind":"identifier"}],"kind":"symbol","url":"\/documentation\/discogsservice\/components\/schemas","role":"symbol","fragments":[{"text":"enum","kind":"keyword"},{"text":" ","kind":"text"},{"text":"Schemas","kind":"identifier"}]},"doc://DiscogsService/documentation/DiscogsService/Components/Schemas/Release/title":{"abstract":[{"type":"text","text":"A title of a release."}],"fragments":[{"text":"var","kind":"keyword"},{"text":" ","kind":"text"},{"text":"title","kind":"identifier"},{"text":": ","kind":"text"},{"text":"String","kind":"typeIdentifier","preciseIdentifier":"s:SS"}],"title":"title","type":"topic","kind":"symbol","url":"\/documentation\/discogsservice\/components\/schemas\/release\/title","role":"symbol","identifier":"doc:\/\/DiscogsService\/documentation\/DiscogsService\/Components\/Schemas\/Release\/title"},"doc://DiscogsService/documentation/DiscogsService/Components":{"type":"topic","role":"symbol","kind":"symbol","fragments":[{"text":"enum","kind":"keyword"},{"text":" ","kind":"text"},{"text":"Components","kind":"identifier"}],"navigatorTitle":[{"text":"Components","kind":"identifier"}],"title":"Components","url":"\/documentation\/discogsservice\/components","identifier":"doc:\/\/DiscogsService\/documentation\/DiscogsService\/Components","abstract":[{"text":"Types generated from the components section of the OpenAPI document.","type":"text"}]}}}