SpotifyClient example allow 200, 201 and 204 status on playlist create (???)

Author: codemasher

examples/Providers/Spotify/SpotifyClient.php

@@ -283,7 +283,7 @@ public function addTracks(string $playlistID, array $trackIDs):static{
 
 			usleep(self::sleepTimer);
 
-			if($playlistAddTracks->getStatusCode() === 201){
+			if(in_array($playlistAddTracks->getStatusCode(), [200, 201, 204])){
 				$json = MessageUtil::decodeJSON($playlistAddTracks);
 
 				$this->logger->info(sprintf('added tracks %s/%s [%s]', ++$i, count($uris), $json->snapshot_id));