Added optional Seerr support.

ani2arr can now show Seerr request actions on AniList and AniChart, letting you request media through your own Seerr instance instead of adding directly to Sonarr or Radarr.

Sonarr and Radarr support still works as before.

Add Radarr support and restructure ani2arr v2 internals

Features
- Adds Sonarr and Radarr actions to AniList anime pages, AniList browse, and AniChart.
- Routes AniList series to Sonarr and AniList movies to Radarr.
- Uses AniList metadata and AniBridge mappings to improve matching.
- Supports manual mappings when automatic matching is wrong, missing, or ambiguous.
- Stores settings locally and does not include analytics, advertising, tracking SDKs, or a developer-operated backend.