Fix deadlock and auto leave voice channel after 3 min

* Fix for thread being busy handling discord commands blocking audioplayer to timeout
* Auto leave if alone in voice channel after 3 min

Bot/Handler/MusicPlayer/PlayCommand/PlayHandler.cs

@@ -45,17 +45,10 @@ public class PlayHandler : IRequestHandler<PlayCommand>
 
         async void PlayMusic()
         {
+            await _audioService.StartAsync(cancellationToken);
             var context = command.Message;
             _context = context;
 
-            if ((context.User as SocketGuildUser)?.VoiceChannel == null)
-            {
-                await context.SendMessageAsync("You must be in a voice channel to use this command.", _client);
-                return;
-            }
-            
-            await _audioService.StartAsync(cancellationToken);
-
             var searchQuery = context.GetOptionValueByName(Option.Input);
 
             if (string.IsNullOrWhiteSpace(searchQuery))