feat(quick-8): add FindDuplicateTracksInPlaylist backend method

- Add DuplicateTrackInfo and DuplicateCheckResult types
- Implement FindDuplicateTracksInPlaylist on playlist Service
- Regenerate Wails TypeScript bindings

frontend/wailsjs/go/playlist/Service.d.ts

@@ -15,6 +15,8 @@ export function DeletePlaylist(arg1:number):Promise<void>;
 
 export function EnsureDefaultPlaylist():Promise<void>;
 
+export function FindDuplicateTracksInPlaylist(arg1:number,arg2:Array<string>):Promise<playlist.DuplicateCheckResult>;
+
 export function FindPhantomMatches(arg1:number,arg2:Array<string>):Promise<playlist.PhantomSearchResult>;
 
 export function GetAllPlaylists():Promise<Array<playlist.Summary>>;

frontend/wailsjs/go/playlist/Service.js

@@ -26,6 +26,10 @@ export function EnsureDefaultPlaylist() {
   return window['go']['playlist']['Service']['EnsureDefaultPlaylist']();
 }
 
+export function FindDuplicateTracksInPlaylist(arg1, arg2) {
+  return window['go']['playlist']['Service']['FindDuplicateTracksInPlaylist'](arg1, arg2);
+}
+
 export function FindPhantomMatches(arg1, arg2) {
   return window['go']['playlist']['Service']['FindPhantomMatches'](arg1, arg2);
 }