finished off helpers, added few more types (might not be used)

Core/Helpers/HttpServerHelper.cs

@@ -2,5 +2,39 @@
 
 public class HttpServerHelper
 {
-    
+    public string GetMimeText(string key)
+    {
+        throw new NotImplementedException();
+    }
+
+    /// <summary>
+    /// Combine ip and port into address
+    /// </summary>
+    /// <returns>url</returns>
+    public string BuildUrl()
+    {
+        throw new NotImplementedException();
+    }
+
+    /// <summary>
+    /// Prepend http to the url:port
+    /// </summary>
+    /// <returns>URI</returns>
+    public string GetBackendUrl()
+    {
+        throw new NotImplementedException();
+    }
+
+    /// <summary>
+    /// Get websocket url + port
+    /// </summary>
+    public string GetWebsocketUrl()
+    {
+        throw new NotImplementedException();
+    }
+
+    public void SendTextJson(object resp, object output)
+    {
+        throw new NotImplementedException();
+    }
 }