Use hard links for build (#19209)

Directory.Build.props

@@ -9,5 +9,9 @@
       <AddSyntheticProjectReferencesForSolutionDependencies>false</AddSyntheticProjectReferencesForSolutionDependencies>
       <RunApiCompat>False</RunApiCompat>
       <LangVersion>12</LangVersion>
+      <CreateHardLinksForCopyAdditionalFilesIfPossible>true</CreateHardLinksForCopyAdditionalFilesIfPossible>
+      <CreateHardLinksForCopyFilesToOutputDirectoryIfPossible>true</CreateHardLinksForCopyFilesToOutputDirectoryIfPossible>
+      <CreateHardLinksForCopyLocalIfPossible>true</CreateHardLinksForCopyLocalIfPossible>
+      <CreateHardLinksForPublishFilesIfPossible>true</CreateHardLinksForPublishFilesIfPossible>
   </PropertyGroup>
 </Project>

tests/BuildTests/Directory.Build.props

@@ -3,6 +3,10 @@
   <PropertyGroup>
     <UseArtifactsOutput>true</UseArtifactsOutput>
     <AppendRuntimeIdentifierToOutputPath>false</AppendRuntimeIdentifierToOutputPath>
+    <CreateHardLinksForCopyAdditionalFilesIfPossible>true</CreateHardLinksForCopyAdditionalFilesIfPossible>
+    <CreateHardLinksForCopyFilesToOutputDirectoryIfPossible>true</CreateHardLinksForCopyFilesToOutputDirectoryIfPossible>
+    <CreateHardLinksForCopyLocalIfPossible>true</CreateHardLinksForCopyLocalIfPossible>
+    <CreateHardLinksForPublishFilesIfPossible>true</CreateHardLinksForPublishFilesIfPossible>
   </PropertyGroup>
 
 </Project>