Cleaned up request acks. Added internal service bus for internal messaging.

Hermes/Socket/Requests/GetTTSVoicesAck.cs

@@ -0,0 +1,40 @@
+using System.Collections.Concurrent;
+using System.Text.Json;
+using HermesSocketLibrary.Requests.Messages;
+using Serilog;
+
+namespace TwitchChatTTS.Hermes.Socket.Requests
+{
+    public class GetTTSVoicesAck : IRequestAck
+    {
+        public string Name => "get_tts_voices";
+        private readonly User _user;
+        private readonly JsonSerializerOptions _options;
+        private readonly ILogger _logger;
+
+        public GetTTSVoicesAck(User user, JsonSerializerOptions options, ILogger logger)
+        {
+            _user = user;
+            _options = options;
+            _logger = logger;
+        }
+
+        public void Acknowledge(string requestId, string json, IDictionary<string, object>? requestData)
+        {
+            var voices = JsonSerializer.Deserialize<IEnumerable<VoiceDetails>>(json, _options);
+            if (voices == null)
+            {
+                _logger.Warning("Voices received is null.");
+                return;
+            }
+            if (!voices.Any())
+            {
+                _logger.Warning("Voices received is empty.");
+                return;
+            }
+
+            _user.VoicesAvailable = new ConcurrentDictionary<string, string>(voices.ToDictionary(e => e.Id, e => e.Name));
+            _logger.Information($"Fetched all available voices for TTS [count: {_user.VoicesAvailable.Count}]");
+        }
+    }
+}