phase 1

ModVersionChecker/service/interfaces/IVersionService.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ModVersionChecker.service.interfaces
+{
+    public interface IVersionService
+    {
+        App CheckApp(App app);
+
+        Task CheckAllApps();
+    }
+}