Ground work for Wino Calendar. (#475)

Wino Calendar abstractions.

Wino.Core.UWP/Dialogs/TextInputDialog.xaml

@@ -0,0 +1,28 @@
+<ContentDialog
+    x:Class="Wino.Dialogs.TextInputDialog"
+    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:domain="using:Wino.Core.Domain"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    HorizontalContentAlignment="Stretch"
+    VerticalContentAlignment="Stretch"
+    DefaultButton="Primary"
+    PrimaryButtonClick="UpdateOrCreateClicked"
+    SecondaryButtonClick="CancelClicked"
+    SecondaryButtonText="{x:Bind domain:Translator.Buttons_Cancel}"
+    Style="{StaticResource WinoDialogStyle}"
+    mc:Ignorable="d">
+
+    <ContentDialog.Resources>
+        <x:Double x:Key="ContentDialogMinWidth">400</x:Double>
+        <x:Double x:Key="ContentDialogMaxWidth">400</x:Double>
+        <x:Double x:Key="ContentDialogMinHeight">200</x:Double>
+        <x:Double x:Key="ContentDialogMaxHeight">756</x:Double>
+    </ContentDialog.Resources>
+
+    <StackPanel Spacing="12">
+        <TextBlock x:Name="DialogDescription" TextWrapping="Wrap" />
+        <TextBox x:Name="FolderTextBox" Text="{x:Bind CurrentInput, Mode=TwoWay}" />
+    </StackPanel>
+</ContentDialog>