Add AniList download command and download service integration

- Implemented a new command for downloading anime episodes using the AniList API.
- Created a DownloadService to manage episode downloads and track their status in the media registry.
- Added comprehensive command-line options for filtering and selecting anime based on various criteria.
- Integrated feedback mechanisms to inform users about download progress and issues.
- Established validation for command options to ensure correct input.
- Enhanced error handling and logging for better debugging and user experience.
- Included functionality for managing multiple downloads concurrently.

fastanime/cli/interactive/session.py

@@ -33,6 +33,7 @@ class Services:
     watch_history: WatchHistoryService
     session: SessionsService
     auth: AuthService
+    download: "DownloadService"
 
 
 @dataclass(frozen=True)