fix(templates): fill Kometa gaps for Radarr and Sonarr

[bakerboy448]

Summary

Completes the Kometa template coverage by researching Kometa-Team/ArrAPI (the library Kometa uses for Radarr/Sonarr integration). Builds on the recent sonarr/kometa series-endpoint fix — this adds the remaining endpoints required for normal Kometa operation.

Changes

radarr/kometa

• Add DELETE on /api/v3/movie/editor — bulk delete via delete_multiple_movies() (remove_all_with_tags, collection cleanup)
• Add POST on /api/v3/tag — auto-create tags when configured labels don't exist (_validate_tags)

sonarr/kometa

• Add POST /api/v3/series/import — bulk add path used by add_multiple_series() (replaces ineffective POST /series)
• Add DELETE on /api/v3/series/editor — bulk delete via delete_multiple_series()
• Add GET /api/v3/languageprofile — required on init for Sonarr v3 _validate_add_options()
• Add POST /api/v3/seasonpass — monitor changes when monitor_existing is enabled
• Add POST on /api/v3/tag — tag auto-creation
• Remove POST on /api/v3/series — Kometa's add flow uses /series/import, not the collection route

Test plan

• Apply updated kometa template to Radarr and Sonarr proxy apps
• Run Kometa with add_missing, tag assignment, and monitor_existing enabled
• Confirm Starr Proxy access log shows no rejected requests for the endpoints above

[bakerboy448]

Superseded by #100, which folds this Kometa fix in as a standalone commit alongside the rest of the template audit.