Refactor API response descriptors to use resource classes

- Updated response descriptors in various endpoints to utilize specific resource classes instead of generic JsonResponse.
- Changed response types for friendship, guild, party, and support issue endpoints to their respective resource classes.
- Incremented version number in manifest.json to 0.5.3 for the new changes.

docs/wiki/Generated-SDK.md

@@ -17,6 +17,7 @@ These files include:
 - middleware metadata
 - request field descriptors
 - response type descriptors
+- typed domain clients and DTOs for generated API resources
 
 ## Usage
 
@@ -44,6 +45,18 @@ String uri = PathBuilder.resolve(
 );
 ```
 
+Use generated domain clients for direct typed calls:
+
+```java
+PlayerPermissionSnapshot permissions =
+    NetworkPlugin.client().players().authorizationPermissionSnapshot(playerId);
+
+AssetPackVersion activePack =
+    NetworkPlugin.client().assets().getActivePack(packKey);
+```
+
+Some generated clients include hand-friendly aliases for route-shaped names. For example, the assets domain exposes `getActivePack(...)` and `getPackVersionFiles(...)` over the generated active-pack and version-files endpoints.
+
 ## Regeneration
 
 The source of truth is `../core-control-plane`.