Bundle the entire CRT with our branded Release packages

For our release builds, we're just going to integrate the UWPDesktop CRT
into our package and delete the package dependencies.  It's very
difficult for users who do not have access to the store to get our
dependency packages, and we want to be robust and deployable everywhere.
Since these libraries can be redistributed, it's easiest if we simply
redistribute them.

Our package grows by ~550kb per architecture (compressed) because of
this. I've added validation that we don't have both the libs _and_ the
dependencies in the same package.

Fixes #3097.

build/scripts/Test-WindowsTerminalPackage.ps1

@@ -68,6 +68,21 @@ Try {
         }
     }
 
+    $dependencies = $Manifest.Package.Dependencies.PackageDependency.Name
+    $depsHasVclibsDesktop = ("Microsoft.VCLibs.140.00.UWPDesktop" -in $dependencies) -or ("Microsoft.VCLibs.140.00.Debug.UWPDesktop" -in $dependencies)
+    $depsHasVcLibsAppX = ("Microsoft.VCLibs.140.00" -in $dependencies) -or ("Microsoft.VCLibs.140.00.Debug" -in $dependencies)
+    $filesHasVclibsDesktop = ($null -ne (Get-Item "$AppxPackageRootPath\vcruntime140.dll" -EA:Ignore)) -or ($null -ne (Get-Item "$AppxPackageRootPath\vcruntime140d.dll" -EA:Ignore))
+    $filesHasVclibsAppX = ($null -ne (Get-Item "$AppxPackageRootPath\vcruntime140_app.dll" -EA:Ignore)) -or ($null -ne (Get-Item "$AppxPackageRootPath\vcruntime140d_app.dll" -EA:Ignore))
+
+    If ($depsHasVclibsDesktop -and $filesHasVclibsDesktop) {
+	    Throw "Package has Dependency *and* integrated Desktop VCLibs"
+    }
+
+    If ($depsHasVclibsAppx -and $filesHasVclibsAppx) {
+	    # We've shipped like this forever, so downgrade to warning.
+	    Write-Warning "Package has Dependency *and* integrated AppX VCLibs"
+    }
+
     ### Check that we have an App.xbf (which is a proxy for our resources having been merged)
     $resourceXpath = '/PriInfo/ResourceMap/ResourceMapSubtree[@name="Files"]/NamedResource[@name="App.xbf"]'
     $AppXbf = $PRIFile.SelectSingleNode($resourceXpath)

src/cascadia/CascadiaPackage/CascadiaPackage.wapproj

@@ -106,6 +106,42 @@
       <AppxUploadPackagePayload Remove="@(AppxUploadPackagePayload)" Condition="'%(Extension)' == '.pri' and '%(Filename)' != 'resources'" />
     </ItemGroup>
   </Target>
+
+  <!-- **BEGIN VC LIBS HACK** -->
+  <!--
+    For our release builds, we're just going to integrate the UWPDesktop CRT into our package and delete the package dependencies.
+    It's very difficult for users who do not have access to the store to get our dependency packages, and we want to be robust
+    and deployable everywhere. Since these libraries can be redistributed, it's easiest if we simply redistribute them.
+  -->
+  <PropertyGroup>
+    <ReasonablePlatform Condition="'$(Platform)'=='Win32'">x86</ReasonablePlatform>
+    <ReasonablePlatform Condition="'$(ReasonablePlatform)'==''">$(Platform)</ReasonablePlatform>
+  </PropertyGroup>
+
+  <ItemGroup Condition="'$(WindowsTerminalReleaseBuild)'=='true'">
+    <!-- Add all the CRT libs as content -->
+    <Content Include="$(VCToolsRedistDir)\$(ReasonablePlatform)\Microsoft.VC142.CRT\*.dll">
+      <DeploymentContent>true</DeploymentContent>
+      <Link>%(Filename)%(Extension)</Link>
+    </Content>
+  </ItemGroup>
+
+  <!-- This target removes the FrameworkSdkReferences from before the AppX package targets manifest generation happens.
+       This is part of the generic machinery that applies to every AppX. -->
+  <Target Name="_OpenConsoleStripAllDependenciesFromPackageFirstManifest" BeforeTargets="_GenerateCurrentProjectAppxManifest">
+    <ItemGroup Condition="'$(WindowsTerminalReleaseBuild)'=='true'">
+      <FrameworkSdkReference Remove="@(FrameworkSdkReference)" />
+    </ItemGroup>
+  </Target>
+
+  <!-- This target removes the FrameworkSdkPackages from before the *desktop bridge* manifest generation happens. -->
+  <Target Name="_OpenConsoleStripAllDependenciesFromPackageSecondManifest" BeforeTargets="_GenerateDesktopBridgeAppxManifest" DependsOnTargets="_ResolveVCLibDependencies">
+    <ItemGroup Condition="'$(WindowsTerminalReleaseBuild)'=='true'">
+      <FrameworkSdkPackage Remove="@(FrameworkSdkPackage)" />
+    </ItemGroup>
+  </Target>
+  <!-- **END VC LIBS HACK** -->
+
   <!-- This is required to get the package dependency in the AppXManifest. -->
   <Import Project="..\..\..\packages\Microsoft.UI.Xaml.2.3.191217003-prerelease\build\native\Microsoft.UI.Xaml.targets" Condition="Exists('..\..\..\packages\Microsoft.UI.Xaml.2.3.191217003-prerelease\build\native\Microsoft.UI.Xaml.targets')" />
   <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">