* Use BlazorWebAssemblySDK
* Update projects to use the BlazorSDK
* Remove tasks and targets from RazorSDK
* Remove workarounds from BlazorSDK
* Fixup
* Fixup
* Wires up CSS isolation on the build.
* Transforms the css files during build.
* Bundles all scopes css into a single file and exposes it on _framework/scoped.styles.cs
* Packs pre-processed files as static web assets.