feat(synced-lyrics): multiple lyric sources (#2383)

Co-authored-by: JellyBrick <shlee1503@naver.com>

src/plugins/synced-lyrics/providers/MusixMatch.ts

@@ -0,0 +1,10 @@
+import type { LyricProvider, LyricResult, SearchSongInfo } from '../types';
+
+export class MusixMatch implements LyricProvider {
+  name = 'MusixMatch';
+  baseUrl = 'https://www.musixmatch.com/';
+
+  search(_: SearchSongInfo): Promise<LyricResult | null> {
+    throw new Error('Not implemented');
+  }
+}