after refactor cleanup

DiunaBI.UI.Mobile/Platforms/Android/MainApplication.cs

@@ -0,0 +1,15 @@
+using Android.App;
+using Android.Runtime;
+
+namespace DiunaBI.UI.Mobile;
+
+[Application]
+public class MainApplication : MauiApplication
+{
+    public MainApplication(IntPtr handle, JniHandleOwnership ownership)
+        : base(handle, ownership)
+    {
+    }
+
+    protected override MauiApp CreateMauiApp() => MauiProgram.CreateMauiApp();
+}