Fixed a lot of compiler warnings. Fixed 7tv connection.

OBS/Socket/Data/RequestResponseMessage.cs

@@ -1,12 +1,10 @@
-using Newtonsoft.Json;
-
 namespace TwitchChatTTS.OBS.Socket.Data
 {
     public class RequestResponseMessage
     {
-        public string RequestType { get; set; }
-        public string RequestId { get; set; }
-        public object RequestStatus { get; set; }
-        public Dictionary<string, object> ResponseData { get; set; }
+        public required string RequestType { get; set; }
+        public required string RequestId { get; set; }
+        public required object RequestStatus { get; set; }
+        public required Dictionary<string, object> ResponseData { get; set; }
     }
 }