[AOT][CmdPal] Enable NativeAOT Compatibility for CmdPal Apps Extension (#39678)

<!-- Enter a brief description/summary of your PR here. What does it
fix/what does it change/how was it tested (even manually, if necessary)?
-->
## Summary of the Pull Request

This PR introduces necessary changes to make the CmdPal.Apps extension
compatible with NativeAOT publishing. The main updates include:

1. Project configuration updates: Added NativeAOT-related properties to
the .csproj.

2. Native interop adjustments:

> - Introduced NativeMethods.json and used
[CsWin32](https://github.com/microsoft/cswin32) to generate P/Invoke
bindings.
> - Replaced some DllImport declarations with source-generated
[LibraryImport] for improved AOT support.

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/Microsoft.CmdPal.Ext.Apps.csproj

@@ -1,11 +1,13 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <Import Project="..\..\..\..\Common.Dotnet.CsWinRT.props" />
+  <Import Project="..\..\..\..\Common.Dotnet.AotCompatibility.props" />
   <PropertyGroup>
     <RootNamespace>Microsoft.CmdPal.Ext.Apps</RootNamespace>
     <Nullable>enable</Nullable>
     <OutputPath>$(SolutionDir)$(Platform)\$(Configuration)\WinUI3Apps\CmdPal</OutputPath>
     <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
     <AppendRuntimeIdentifierToOutputPath>false</AppendRuntimeIdentifierToOutputPath>
+	<DisableRuntimeMarshalling>true</DisableRuntimeMarshalling>
   </PropertyGroup>
 
   <ItemGroup>
@@ -49,4 +51,9 @@
       <LastGenOutput>Resources.Designer.cs</LastGenOutput>
     </EmbeddedResource>
   </ItemGroup>
+
+  <ItemGroup>
+    <AdditionalFiles Include="NativeMethods.txt" />
+    <AdditionalFiles Include="NativeMethods.json" />
+  </ItemGroup>
 </Project>