Drag drop finally works

WIP item background
New Donate page stub
Renamed some classes as services

ModernKeePass/Pages/MainPageFrames/DonatePage.xaml

@@ -0,0 +1,14 @@
+<Page
+    x:Class="ModernKeePass.Pages.MainPageFrames.DonatePage"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    mc:Ignorable="d">
+
+    <StackPanel Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
+        <TextBlock x:Uid="DonateDesc" />
+        <RadioButton GroupName="DonateOptions"  />
+        <Button x:Uid="DonateButton" />
+    </StackPanel>
+</Page>