Add project files.

Exceptions/UnknownTypeException.cs

@@ -0,0 +1,21 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace GpsClient2.Exceptions {
+    public class UnknownTypeException : Exception {
+        public UnknownTypeException(Type type) : base($"Unknown Class Type: {type}") {
+
+        }
+
+        public UnknownTypeException(string type) : base($"Unknown Class Type: {type}") {
+
+        }
+
+        public UnknownTypeException() : base("Unknown Class Type") {
+
+        }
+    }
+}