Tweaks and fixes throughout the project (#27)

This PR contains the work done to do a little bit of housekeeping pass across all packages and the Website service.

To provide further details about the work:
* Refreshed the READMEs and source documentation to match the current code;
* Tagged every test case consistently across the Infrastructure, Localization, Persistence, and Website test targets;
* Removed Website middleware tests now covered by Infrastructure's own suite;
* Conformed the `PrepareDB` method to Sendable;
* Relaxes the production Compose DATABASE_TLS default from require to prefer;
* Added Persistence test verifying the prefer posture falls back to plaintext connections.

Reviewed-on: rock-n-code/loud-amsterdam#27
Co-authored-by: Javier Cicchelli <javier@rock-n-code.com>
Co-committed-by: Javier Cicchelli <javier@rock-n-code.com>

Packages/Infrastructure/Tests/Cases/Public/Middlewares/LocalizationMiddlewareTests.swift

@@ -7,7 +7,10 @@ import Testing
 
 @testable import Infrastructure
 
-@Suite("LocalizationMiddleware middleware", .tags(.middleware))
+@Suite(
+    "LocalizationMiddleware middleware",
+    .tags(.middleware)
+)
 struct LocalizationMiddlewareTests {
 
     // MARK: Constants

Packages/Infrastructure/Tests/Cases/Public/Middlewares/NotFoundMiddlewareTests.swift

@@ -6,7 +6,10 @@ import Testing
 
 @testable import Infrastructure
 
-@Suite("NotFoundMiddleware middleware", .tags(.middleware))
+@Suite(
+    "NotFoundMiddleware middleware",
+    .tags(.middleware)
+)
 struct NotFoundMiddlewareTests {
 
     // MARK: Constants

Packages/Infrastructure/Tests/Cases/Public/Middlewares/RateLimitMiddlewareTests.swift

@@ -4,7 +4,10 @@ import Testing
 
 @testable import Infrastructure
 
-@Suite("RateLimitMiddleware middleware", .tags(.middleware))
+@Suite(
+    "RateLimitMiddleware middleware",
+    .tags(.middleware)
+)
 struct RateLimitMiddlewareTests {
 
     // MARK: Functional tests

Packages/Infrastructure/Tests/Cases/Public/Middlewares/SecurityHeadersMiddlewareTests.swift

@@ -4,7 +4,10 @@ import Testing
 
 @testable import Infrastructure
 
-@Suite("SecurityHeadersMiddleware middleware", .tags(.middleware))
+@Suite(
+    "SecurityHeadersMiddleware middleware",
+    .tags(.middleware)
+)
 struct SecurityHeadersMiddlewareTests {
 
     // MARK: Functional tests

Packages/Infrastructure/Tests/Cases/Public/Middlewares/VaryMiddlewareTests.swift

@@ -5,7 +5,10 @@ import Testing
 
 @testable import Infrastructure
 
-@Suite("VaryMiddleware middleware", .tags(.middleware))
+@Suite(
+    "VaryMiddleware middleware",
+    .tags(.middleware)
+)
 struct VaryMiddlewareTests {
 
     // MARK: Functional tests