Added Nightbot integration. Changed from client credentials flow to implicit code grant flow.

User.cs

@@ -1,6 +1,7 @@
 using System.Text.Json.Serialization;
 using System.Text.RegularExpressions;
 using HermesSocketLibrary.Requests.Messages;
+using HermesSocketLibrary.Socket.Data;
 using TwitchChatTTS.Twitch.Socket.Handlers;
 
 namespace TwitchChatTTS
@@ -15,6 +16,9 @@ namespace TwitchChatTTS
         public string SevenEmoteSetId { get; set; }
         public long? OwnerId { get; set; }
 
+        public Connection? TwitchConnection { get; set; }
+        public Connection? NightbotConnection { get; set; }
+
         public string DefaultTTSVoice { get; set; }
         // voice id -> voice name
         public IDictionary<string, string> VoicesAvailable { get => _voicesAvailable; set { _voicesAvailable = value; VoiceNameRegex = GenerateEnabledVoicesRegex(); } }