feat: initialize WinUI 3 WebView migration

App.xaml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<Application
+    x:Class="MBN_STOCK_WEBVIEW.App"
+    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="using:MBN_STOCK_WEBVIEW"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    mc:Ignorable="d">
+    <Application.Resources>
+        <ResourceDictionary>
+            <ResourceDictionary.MergedDictionaries>
+                <XamlControlsResources xmlns="using:Microsoft.UI.Xaml.Controls" />
+                <!-- Other merged dictionaries here -->
+            </ResourceDictionary.MergedDictionaries>
+            <Color x:Key="AppBackgroundColor">#07101D</Color>
+            <Color x:Key="AppSurfaceColor">#0D1929</Color>
+            <Color x:Key="AppBorderColor">#1E314A</Color>
+            <Color x:Key="AppAccentColor">#32D5A4</Color>
+
+            <SolidColorBrush x:Key="AppBackgroundBrush" Color="{StaticResource AppBackgroundColor}" />
+            <SolidColorBrush x:Key="AppSurfaceBrush" Color="{StaticResource AppSurfaceColor}" />
+            <SolidColorBrush x:Key="AppBorderBrush" Color="{StaticResource AppBorderColor}" />
+            <SolidColorBrush x:Key="AppAccentBrush" Color="{StaticResource AppAccentColor}" />
+        </ResourceDictionary>
+    </Application.Resources>
+</Application>