Initial commit: ym-dl with yandex-music-api-go library migration

Migrate ym-dl from custom oapi-codegen Yandex Music API client to external
gitea.mrixs.me/Mrixs/yandex-music-api-go library with token-only authentication.

Key changes:
- Replace custom Yandex API client with yandexmusic library wrapper
- Token-based OAuth authentication only (no username/password fallback)
- SQLite storage index with JSON index migration path
- Extended ID3 tag support: genre, comment, lyrics, publisher, ISRC, copyright
- High-resolution album covers (1000x1000)
- Fixed album download check (requires all tracks, not just one)

go.mod

@@ -0,0 +1,16 @@
+module ym-dl
+
+go 1.27.2
+
+require (
+	gitea.mrixs.me/Mrixs/yandex-music-api-go v0.0.0-20261014200451-02a6dabcfbea
+	github.com/bogem/id3v2 v1.2.0
+	github.com/mattn/go-sqlite3 v1.14.24
+	gopkg.in/yaml.v3 v3.0.1
+)
+
+require (
+	github.com/gorilla/websocket v1.5.3 // indirect
+	golang.org/x/text v0.32.0 // indirect
+	google.golang.org/protobuf v1.36.12 // indirect
+)