feat(library): add media library browsing functionality

- Introduced new `library` module in the API routes to handle media library requests.
- Enhanced `AppState` to include a media provider for library interactions.
- Defined new `IMediaProvider` trait methods for listing collections, series, and genres.
- Implemented Jellyfin media provider methods for fetching collections and series.
- Added frontend components for selecting series and displaying filter previews.
- Created hooks for fetching collections, series, and genres from the library.
- Updated media filter to support series name and search term.
- Enhanced API client to handle new library-related endpoints.

k-tv-frontend/lib/types.ts

@@ -12,6 +12,38 @@ export interface MediaFilter {
   min_duration_secs?: number | null;
   max_duration_secs?: number | null;
   collections: string[];
+  /** Filter by TV series name, e.g. "iCarly". Use with Sequential strategy. */
+  series_name?: string | null;
+  /** Free-text search, used for library browsing only. */
+  search_term?: string | null;
+}
+
+// Library browsing
+
+export interface CollectionResponse {
+  id: string;
+  name: string;
+  collection_type?: string | null;
+}
+
+export interface SeriesResponse {
+  id: string;
+  name: string;
+  episode_count: number;
+  genres: string[];
+  year?: number | null;
+}
+
+export interface LibraryItemResponse {
+  id: string;
+  title: string;
+  content_type: ContentType;
+  duration_secs: number;
+  series_name?: string | null;
+  season_number?: number | null;
+  episode_number?: number | null;
+  year?: number | null;
+  genres: string[];
 }
 
 export interface RecyclePolicy {