Add music/book request flow support

- Add permission checks for music/book in MediaRequest.request()
- Add quota checks for music/book types
- Add externalServiceId and externalServiceTitle columns to Media entity
- Add foreignId/foreignTitle to MediaRequestBody interface
- Add requestMusicOrBook() method for simplified music/book requests
- Make TMDB lookup conditional (skip for music/book)
- Update request route filtering for music/book types
- Handle duplicate detection for foreign ID based media

server/routes/request.ts

@@ -173,6 +173,16 @@ requestRoutes.get<Record<string, unknown>, RequestResultsResponse>(
             type: MediaType.TV,
           });
           break;
+        case 'music':
+          query = query.andWhere('request.type = :type', {
+            type: MediaType.MUSIC,
+          });
+          break;
+        case 'book':
+          query = query.andWhere('request.type = :type', {
+            type: MediaType.BOOK,
+          });
+          break;
       }
 
       const [requests, requestCount] = await query