Added hermes websocket support. Added chat command support. Added selectable voice command via websocket. Added websocket heartbeat management.

Chat/Commands/SkipCommand.cs

@@ -0,0 +1,35 @@
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Logging;
+using TwitchLib.Client.Models;
+
+namespace TwitchChatTTS.Chat.Commands
+{
+    public class SkipCommand : ChatCommand
+    {
+        private IServiceProvider _serviceProvider;
+        private ILogger<SkipCommand> _logger;
+
+        public SkipCommand(IServiceProvider serviceProvider, ILogger<SkipCommand> logger)
+        : base("skip", "Skips the current text to speech message.") {
+            _serviceProvider = serviceProvider;
+            _logger = logger;
+        }
+
+        public override async Task<bool> CheckPermissions(ChatMessage message, long broadcasterId)
+        {
+            return message.IsModerator || message.IsVip || message.IsBroadcaster;
+        }
+
+        public override async Task Execute(IList<string> args, ChatMessage message, long broadcasterId)
+        {
+            var player = _serviceProvider.GetRequiredService<TTSPlayer>();
+            if (player.Playing == null)
+                return;
+            
+            AudioPlaybackEngine.Instance.RemoveMixerInput(player.Playing);
+            player.Playing = null;
+
+            _logger.LogInformation("Skipped current tts.");
+        }
+    }
+}