Add more scopes to Spotify

bot.go

 }
 
 func (app *App) CreateSpotifyAuthenticator() *spotify.Authenticator {
-	auth := spotify.NewAuthenticator(app.credentials.SpotifyCallback, spotify.ScopePlaylistModifyPublic)
+	auth := spotify.NewAuthenticator(app.credentials.SpotifyCallback, spotify.ScopeUserReadPrivate, spotify.ScopePlaylistModifyPrivate, spotify.ScopePlaylistModifyPublic)
 	auth.SetAuthInfo(app.credentials.SpotifyClientID, app.credentials.SpotifyClientSecret)
 	return &auth
 }