Move umbraco views to static assets and make that an RCL + Embedded language files (#12324)

* RCL for static assets to replace the nuspec

* Fix build

* Fix unit tests

* clean up in build.ps1

* Removed test (lang files will be removed later anyway)

* Fixed namespaces.. + Ensure we set web root path if missing (e.g. wwwroot folder do not exist) + Added StaticWebAssetBasePath

* fixed namespace

* cleanup

* Set root variable

* Added static assets

* Experimenting with StaticWebAssetBasePath

* Embedded lang files into Umbraco.Core

* Removed legacy test. New test can be implemented instead

* Fixed tests

* clean up

* Fix merge issue

src/Umbraco.Infrastructure/Umbraco.Infrastructure.csproj

@@ -116,5 +116,4 @@
     <ItemGroup>
       <ProjectReference Include="..\Umbraco.Core\Umbraco.Core.csproj" />
     </ItemGroup>
-
 </Project>