feat: implement Live/Remix filtering and add CI/CD pipeline

This commit includes:

1. Live/Remix Filtering Feature:
   - Added ignore_live and ignore_remix columns to artist_settings table (migration 010)
   - Updated ArtistSettings struct with IgnoreLive and IgnoreRemix fields
   - Modified SaveArtistSettings and UpdateArtistSettings to handle new fields
   - Extended FilterOptions struct with IgnoreLive and IgnoreRemix
   - Updated ApplyTypeToggles and ApplyTypeTogglesToReleaseGroups to filter Live/Remix types
   - Added toggleIgnoreLive and toggleIgnoreRemix handlers in web layer
   - Updated ArtistData view model and artist.html template with new toggle UI
   - Comprehensive test coverage for all new functionality

2. CI/CD Pipeline with Gitea Actions:
   - Added .gitea/workflows/docker-build.yml for automated Docker builds
   - Workflow triggers on pushes to main/master and tags, plus PRs
   - Runs Go tests before building
   - Builds and pushes multi-architecture Docker images to gitea.mrixs.me
   - Includes caching for faster subsequent builds
   - Proper tagging strategy (branch, semver, SHA)
   - CI-CD-GUIDE.md documentation

3. Cleanup:
   - Removed temporary build artifacts and coverage files

internal/musicbrainz/sync.go

@@ -235,9 +235,9 @@ func SyncArtistDiscography(
 func getArtistFilterOptions(db *database.DB, artistID string) (FilterOptions, error) {
 	var opts FilterOptions
 	err := db.Conn().QueryRow(
-		"SELECT COALESCE(ignore_singles, 0), COALESCE(ignore_compilations, 0) FROM artist_settings WHERE id = ?",
+		"SELECT COALESCE(ignore_singles, 0), COALESCE(ignore_compilations, 0), COALESCE(ignore_live, 0), COALESCE(ignore_remix, 0) FROM artist_settings WHERE id = ?",
 		artistID,
-	).Scan(&opts.IgnoreSingles, &opts.IgnoreCompilations)
+	).Scan(&opts.IgnoreSingles, &opts.IgnoreCompilations, &opts.IgnoreLive, &opts.IgnoreRemix)
 	if err == sql.ErrNoRows {
 		return opts, nil
 	}