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

@@ -45,16 +45,9 @@ 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);
 
@@ -63,7 +56,7 @@ public class PlayHandler : IRequestHandler<PlayCommand>
                 await context.SendMessageAsync("Please provide search terms.", _client);
                 return;
             }
-            
+
             var player = await _audioService.GetPlayerAsync(_client, context, connectToVoiceChannel: true);
 
             if (player is null) return;