Onboard to v3 publishing (#3551)

azure-pipelines.yml

@@ -75,6 +75,7 @@ stages:
 - ${{ if and(ne(variables['System.TeamProject'], 'public'), notin(variables['Build.Reason'], 'PullRequest')) }}:
   - template: eng\common\templates\post-build\post-build.yml
     parameters:
+      publishingInfraVersion: 3
       enableSymbolValidation: false
       enableSigningValidation: false
       enableNugetValidation: false

eng/Publishing.props

@@ -17,4 +17,8 @@
   <Import Project="WpfArcadeSdk\tools\Publishing.targets"
         Condition="'$(MicrosoftDotNetArcadeWpfSdkVersion)' == '' And 
                       Exists('WpfArcadeSdk\Sdk\Sdk.props') And Exists('WpfArcadeSdk\Sdk\Sdk.targets')"/>
+
+  <PropertyGroup>
+    <PublishingVersion>3</PublishingVersion>
+  </PropertyGroup>
 </Project>