Add project files.

Model/BaseGpsInfo.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace GpsClient2.Model {
+    public abstract class BaseGpsInfo {
+        public GpsCoordinateSystem CoordinateSystem { get; set; } = GpsCoordinateSystem.GeoEtrs89;
+
+        public int ReadFrequenty { get; set; }
+    }
+}