* Add Powershell script to validate whether CSharp project correctly import shared props, update pipeline to enforce such validation, and fixed all projects that didn't import this shared props correctly
* add common props for fuzz test project
* update the path
* Only scans projects in src sub-folder
* Update .pipelines/verifyCommonProps.ps1
* Update csproj to include Common.Dotnet.CsWinRT.props
* Fix indentation in RegistryPreview.FuzzTests.csproj
* exclude TemplateCmdPalExtension.csproj in validation process
* exclude TemplateCmdPalExtension.csproj in validation process
---------
Co-authored-by: Leilei Zhang <leilzh@microsoft.com>
Co-authored-by: Jerry Xu <nxu@microsoft.com>
