Implemented the POST /marketplace/listings endpoint for the Open API specification document in the library target.

Sources/DiscogsService/openapi.yaml

@@ -1975,6 +1975,42 @@ paths:
           $ref: '#/components/responses/NotAccessable'
         '500':
           $ref: '#/components/responses/InternalError'
+  /marketplace/listings:
+    post:
+      tags:
+        - Marketplace
+      summary: Create a new listing in a marketplace.
+      description: |
+        Createa a new listing in a marketplace.
+
+        This endpoint requires authentication, to add a listing into an inventory of an authenticated user.
+      operationId: createListing
+      requestBody:
+        $ref: '#/components/requestBodies/Listing'
+      security:
+        - ConsumerKeySecret: []
+        - UserToken: []
+        - OAuth: []
+      responses:
+        '201':
+          description: Successfully added a listing into a marketplace.
+          headers:
+            X-Discogs-RateLimit:
+              $ref: '#/components/headers/RateLimit'
+            X-Discogs-RateLimit-Used:
+              $ref: '#/components/headers/RateLimitUsed'
+            X-Discogs-RateLimit-Remaining:
+              $ref: '#/components/headers/RateLimitRemaining'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ListingId'
+        '401':
+          $ref: '#/components/responses/Unauthorized'
+        '403':
+          $ref: '#/components/responses/NotAccessable'
+        '500':
+          $ref: '#/components/responses/InternalError'
 components:
   headers:
     Link:
@@ -3188,6 +3224,23 @@ components:
         - sleeve_condition
         - status
         - uri
+    ListingId:
+      description: A type that references a listing.
+      type: object
+      properties:
+        listing_id:
+          description: An identifier of a listing.
+          type: integer
+          minimum: 0
+          readOnly: true
+        resource_url:
+          description: A URI resource of a listing.
+          type: string
+          format: uri
+          readOnly: true
+      required: 
+        - listing_id
+        - resource_url
     Master:
       description: A type that represents a set of similar releases.
       type: object