Implement AuthService and ApiClient core logic

Models/WebSocketModels.cs

@@ -0,0 +1,20 @@
+using Newtonsoft.Json;
+
+namespace Chtn.CSharp.SDK.Models.Websocket
+{
+    public class WSMessagePayload
+    {
+        [JsonProperty("action")] public string Action { get; set; }
+        [JsonProperty("data")] public string Data { get; set; }
+    }
+
+    public class WSMakeTokenReq
+    {
+        [JsonProperty("userid")] public string UserId { get; set; }
+    }
+
+    public class WSMakeTokenResp
+    {
+        [JsonProperty("token")] public string Token { get; set; }
+    }
+}