Convert the hybrid webview from typescript

* Convert the JS file into TypeScript
* Move the JS file into the Core project structure so it is not just a
  sample resource but part of the maui source
* Link the output into the sample/test apps

Author: mattleibow

Directory.Build.targets

@@ -125,4 +125,7 @@
     </ItemGroup>
   </Target>
 
+  <!-- Tell typescript to stop deleting everything before building the next TFM -->
+  <Target Name="TypeScriptDeleteOutputFromOtherConfigs" />
+
 </Project>

src/Controls/samples/Controls.Sample/Maui.Controls.Sample.csproj

@@ -77,6 +77,7 @@
   <ItemGroup>
     <EmbeddedResource Include="Resources\Embedded\*" />
     <MauiAsset Include="Resources\Raw\**" LogicalName="%(RecursiveDir)%(Filename)%(Extension)" />
+    <MauiAsset Include="..\..\..\Core\src\Handlers\HybridWebView\HybridWebView.js" LogicalName="HybridSamplePage\scripts\HybridWebView.js" />
     <MauiImage Include="Resources\Images\*" />
     <MauiImage Update="Resources\Images\*.gif" Resize="false" />
     <MauiIcon Include="Resources\AppIcons\appicon.svg" ForegroundFile="Resources\AppIcons\appicon_foreground.svg" />

src/Controls/samples/Controls.Sample/Resources/Raw/HybridSamplePage/scripts/HybridWebView.js

@@ -32,6 +32,7 @@
     <!-- Raw Assets for HybridWebView tests (removes the "Resources\Raw" prefix, to mimic what project templates do) -->
     <None Remove="Resources\Raw\**" />
     <MauiAsset Include="Resources\Raw\**" LogicalName="%(RecursiveDir)%(Filename)%(Extension)" />
+    <MauiAsset Include="..\..\..\Core\src\Handlers\HybridWebView\HybridWebView.js" LogicalName="HybridTestRoot\scripts\HybridWebView.js" />
   </ItemGroup>
 
   <PropertyGroup>

src/Controls/tests/DeviceTests/Controls.DeviceTests.csproj

@@ -69,6 +69,24 @@
     <None Include="nuget\buildTransitive\net-windows\**" PackagePath="buildTransitive\net$(_MauiMinimumSupportedDotNetTfm)-windows$(MinimumWindowsTargetFrameworkVersion)" Pack="true" />
   </ItemGroup>
 
+  <!-- TypeScript compilation -->
+  <PropertyGroup>
+    <TypeScriptTarget>ES2020</TypeScriptTarget>
+    <TypeScriptSourceMap>false</TypeScriptSourceMap>
+    <TypeScriptNoImplicitAny>true</TypeScriptNoImplicitAny>
+    <TypeScriptCompileOnSaveEnabled>true</TypeScriptCompileOnSaveEnabled>
+  </PropertyGroup>
+  <ItemGroup>
+    <PackageReference Include="Microsoft.TypeScript.MSBuild" Version="5.7.1">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+  </ItemGroup>
+  <ItemGroup>
+    <!-- TODO: embed the JS into the dll -->
+    <!-- <EmbeddedResource Include="Handlers\HybridWebView\HybridWebView.js" LogicalName="_framework/hybridwebview.js" /> -->
+  </ItemGroup>
+
   <Target Name="_CopyToBuildTasksDir" AfterTargets="Build">
     <ItemGroup>
       <_CopyItems Include="nuget\buildTransitive\**" SubFolder="" Exclude="nuget\**\*.in.*;nuget\**\net-*\*" />