stub out xamarin project

src/Android/MainApplication.cs

@@ -0,0 +1,19 @@
+using System;
+using Android.App;
+using Android.Runtime;
+
+namespace Bit.Droid
+{
+#if DEBUG
+    [Application(Debuggable = true)]
+#else
+    [Application(Debuggable = false)]
+#endif
+    [Register("com.x8bit.bitwarden.MainApplication")]
+    public class MainApplication : Application
+    {
+        public MainApplication(IntPtr handle, JniHandleOwnership transer)
+          : base(handle, transer)
+        { }
+    }
+}