Framework changed to WPF

Only the basic window frame is implemented.
Adjusted the structure of resource files.

Source/GrasscutterTools/Pages/PageGive.xaml

@@ -0,0 +1,54 @@
+<Page
+    x:Class="GrasscutterTools.Pages.PageGive"
+    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:local="clr-namespace:GrasscutterTools.Pages"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    Title="PageGive"
+    d:Background="{StaticResource NormalBorderBrush}"
+    d:DesignHeight="420"
+    d:DesignWidth="490"
+    mc:Ignorable="d">
+
+    <StackPanel Margin="16">
+
+        <GroupBox Header="Give Item" />
+
+        <DockPanel>
+            <Label x:Name="LblLevelTip" Content="Level:" />
+            <TextBox
+                x:Name="TxtLevel"
+                Margin="4,0,0,0"
+                Text="100" />
+        </DockPanel>
+
+        <GroupBox Header="Give All">
+            <StackPanel Margin="8" Orientation="Horizontal">
+                <Button
+                    x:Name="BtnGiveAll"
+                    Padding="16,8"
+                    HorizontalAlignment="Left"
+                    Content="All" />
+                <Button
+                    x:Name="BtnGiveWeapons"
+                    Margin="8,0,0,0"
+                    Padding="16,8"
+                    HorizontalAlignment="Left"
+                    Content="Weapons" />
+                <Button
+                    x:Name="BtnGiveMats"
+                    Margin="8,0,0,0"
+                    Padding="16,8"
+                    HorizontalAlignment="Left"
+                    Content="Mats" />
+                <Button
+                    x:Name="BtnGiveAvatars"
+                    Margin="8,0,0,0"
+                    Padding="16,8"
+                    HorizontalAlignment="Left"
+                    Content="Avatars" />
+            </StackPanel>
+        </GroupBox>
+    </StackPanel>
+</Page>