Added test page

A reference to `Microsoft.Toolkit.Win32.UI.XamlApplication` is needed in order for the stuff to work!!!

Author: ShortDevelopment

VBAudioRouter.UWP/BlankPage1.xaml

@@ -0,0 +1,19 @@
+<Page
+    x:Class="VBAudioRouter.BlankPage1"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:local="using:VBAudioRouter"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    mc:Ignorable="d">
+
+    <Grid>
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition Width="*" />
+            <ColumnDefinition Width="10" />
+            <ColumnDefinition Width="*" />
+        </Grid.ColumnDefinitions>
+        <Border Background="#3B3C3D" CornerRadius="10" Grid.Column="0" />
+        <Border Background="#3B3C3D" CornerRadius="10" Grid.Column="2" />
+    </Grid>
+</Page>

VBAudioRouter.UWP/BlankPage1.xaml.vb

@@ -0,0 +1,9 @@
+' The Blank Page item template is documented at https://go.microsoft.com/fwlink/?LinkId=234238
+
+''' <summary>
+''' An empty page that can be used on its own or navigated to within a Frame.
+''' </summary>
+Public NotInheritable Class BlankPage1
+    Inherits Page
+
+End Class

VBAudioRouter.UWP/VBAudioRouter.UWP.vbproj

@@ -156,6 +156,9 @@
     <Compile Include="AudioControlPage.xaml.vb">
       <DependentUpon>AudioControlPage.xaml</DependentUpon>
     </Compile>
+    <Compile Include="BlankPage1.xaml.vb">
+      <DependentUpon>BlankPage1.xaml</DependentUpon>
+    </Compile>
     <Compile Include="Controls\AudioSessionControl.xaml.vb">
       <DependentUpon>AudioSessionControl.xaml</DependentUpon>
     </Compile>
@@ -309,6 +312,10 @@
       <SubType>Designer</SubType>
       <Generator>MSBuild:Compile</Generator>
     </Page>
+    <Page Include="BlankPage1.xaml">
+      <SubType>Designer</SubType>
+      <Generator>MSBuild:Compile</Generator>
+    </Page>
     <Page Include="Controls\AudioSessionControl.xaml">
       <SubType>Designer</SubType>
       <Generator>MSBuild:Compile</Generator>
@@ -428,6 +435,9 @@
     <PackageReference Include="Microsoft.NETCore.UniversalWindowsPlatform">
       <Version>6.2.13</Version>
     </PackageReference>
+    <PackageReference Include="Microsoft.Toolkit.Win32.UI.XamlApplication">
+      <Version>6.1.3</Version>
+    </PackageReference>
     <PackageReference Include="Microsoft.Toolkit.Uwp.UI.Controls">
       <Version>7.1.2</Version>
     </PackageReference>