Ship BuildXL assemblies in our VSIX and not our NuGet packages (#9185)

* Ship BuildXL assemblies in our VSIX

* Specify 3rd-party cert for 3rd-party file

* Remove BuildXL NuGet dependencies

Because BuildXL is not pushed to nuget.org, it's an inconvenient
dependency. But it's not required for API completion so mark it
as a private dependency--it can be satisified by the VS install.

eng/Signing.props

@@ -1,9 +1,11 @@
 <Project>
   <ItemGroup>
     <ItemsToSign Include="$(VisualStudioSetupInsertionPath)Microsoft.Build.UnGAC.exe" />
+
+    <FileSignInfo Include="RuntimeContracts.dll" CertificateName="3PartySHA2" />
   </ItemGroup>
-    
+
   <PropertyGroup>
     <UseDotNetCertificate>true</UseDotNetCertificate>
   </PropertyGroup>
-</Project>
+</Project>

src/Build/Microsoft.Build.csproj

@@ -40,7 +40,7 @@
 
     <PackageReference Include="Microsoft.IO.Redist" Condition="'$(FeatureMSIORedist)' == 'true'" />
 
-    <PackageReference Include="Microsoft.BuildXL.Processes" Condition="'$(FeatureReportFileAccesses)' == 'true'" />
+    <PackageReference Include="Microsoft.BuildXL.Processes" Condition="'$(FeatureReportFileAccesses)' == 'true'" PrivateAssets="all" />
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetFrameworkIdentifier)' == '.NETFramework' and '$(DotNetBuildFromSource)' != 'true'">

src/MSBuild/MSBuild.csproj

@@ -217,6 +217,7 @@
     </None>
   </ItemGroup>
   <ItemGroup>
+    <PackageReference Include="Microsoft.BuildXL.Processes" Condition="'$(FeatureReportFileAccesses)' == 'true'" PrivateAssets="all" />
     <PackageReference Include="Microsoft.IO.Redist" Condition="'$(FeatureMSIORedist)' == 'true'" />
     <PackageReference Include="System.Configuration.ConfigurationManager" />
   </ItemGroup>

src/MSBuild/app.amd64.config

@@ -54,6 +54,18 @@
         </dependentAssembly>
 
         <!-- Redirects for assemblies redistributed by MSBuild (in the .vsix). -->
+        <dependentAssembly>
+          <assemblyIdentity name="BuildXL.Native" publicKeyToken="6212d9137135ce5d" culture="neutral" />
+          <codeBase version="1.0.0.0" href="..\BuildXL.Native.dll"/>
+        </dependentAssembly>
+        <dependentAssembly>
+          <assemblyIdentity name="BuildXL.Processes" publicKeyToken="6212d9137135ce5d" culture="neutral" />
+          <codeBase version="1.0.0.0" href="..\BuildXL.Processes.dll"/>
+        </dependentAssembly>
+        <dependentAssembly>
+          <assemblyIdentity name="BuildXL.Utilities.Core" publicKeyToken="6212d9137135ce5d" culture="neutral" />
+          <codeBase version="1.0.0.0" href="..\BuildXL.Utilities.Core.dll"/>
+        </dependentAssembly>
         <dependentAssembly>
           <assemblyIdentity name="Microsoft.Bcl.AsyncInterfaces" publicKeyToken="cc7b13ffcd2ddd51" culture="neutral" />
           <bindingRedirect oldVersion="0.0.0.0-7.0.0.0" newVersion="7.0.0.0" />

src/Package/MSBuild.VSSetup/files.swr

@@ -36,8 +36,12 @@ folder InstallDir:\MSBuild\Current\Bin
   file source=$(X86BinPath)Microsoft.IO.Redist.dll vs.file.ngenApplications="[installDir]\Common7\IDE\vsn.exe" vs.file.ngenApplications="[installDir]\MSBuild\Current\Bin\MSBuild.exe" vs.file.ngenArchitecture=all vs.file.ngenPriority=1
   file source=$(X86BinPath)MSBuild.exe vs.file.ngenArchitecture=x86 vs.file.ngenPriority=1
   file source=$(X86BinPath)MSBuild.exe.config
-  file source=$(TaskHostBinPath)MSBuildTaskHost.exe 
+  file source=$(TaskHostBinPath)MSBuildTaskHost.exe
   file source=$(TaskHostBinPath)MSBuildTaskHost.exe.config
+  file source=$(X86BinPath)BuildXL.Native.dll
+  file source=$(X86BinPath)BuildXL.Processes.dll
+  file source=$(X86BinPath)BuildXL.Utilities.Core.dll
+  file source=$(X86BinPath)RuntimeContracts.dll
   file source=$(X86BinPath)System.Buffers.dll vs.file.ngenApplications="[installDir]\MSBuild\Current\Bin\MSBuild.exe" vs.file.ngenArchitecture=all vs.file.ngenPriority=1
   file source=$(X86BinPath)System.Memory.dll vs.file.ngenApplications="[installDir]\MSBuild\Current\Bin\MSBuild.exe" vs.file.ngenArchitecture=all vs.file.ngenPriority=1
   file source=$(X86BinPath)System.Reflection.Metadata.dll vs.file.ngenApplications="[installDir]\MSBuild\Current\Bin\MSBuild.exe" vs.file.ngenArchitecture=all vs.file.ngenPriority=1
@@ -313,6 +317,13 @@ folder InstallDir:\MSBuild\Current\Bin\amd64\zh-Hant
   file source=$(X64BinPath)zh-Hant\MSBuild.resources.dll
   file source=$(TaskHostX64BinPath)zh-Hant\MSBuildTaskHost.resources.dll
 
+folder InstallDir:\MSBuild\Current\Bin\x86
+  file source=$(X86BinPath)x86\DetoursServices.dll
+
+folder InstallDir:\MSBuild\Current\Bin\x64
+  file source=$(X86BinPath)x64\DetoursServices.dll
+  file source=$(X86BinPath)x64\BuildXLNatives.dll
+
 folder InstallDir:\Common7\IDE\CommonExtensions\MSBuild
   file source=$(SourceDir)Package\MSBuild.VSSetup\MSBuild.clientenabledpkg
   file source=$(SourceDir)Framework\Microsoft.Build.Framework.pkgdef