fix skip command and now playing callback

commands/skip.ts

@@ -14,6 +14,7 @@ export const skipCommand = {
 
 export async function skip( interaction: Interaction) {
 	if (!interaction.guildId) return;
+	await interaction.deferReply();
 	await ensureVoiceConnection(interaction);
 	const subscription = subscriptions.get(interaction.guildId);
 	await interaction.followUp(waitingForResponse);

subscription.ts

@@ -162,6 +162,7 @@ export class MusicSubscription {
 				this.queueLock = false;
 				this.playing = true;
 				this.nowPlaying = nextTrack;
+				nowPlayingCallback(this);
 			}
 		} catch (error) {
 			// If an error occurred, try the next item of the queue instead