This PR adds two new tools as well as a tasks project. None of these
projects produce a package and they ship as part of
Microsoft.AspNetCore.Razor.Design. For now this is a 'fat' package that
contains all of the dependencies, but we plan to strip them out in the
future.
The support for compilation at build-time will start as **off** by
default. The immediate goal here is to get this to flow through the
build so that we can test it as part of the inner loop effort. We will
enable this feature by default once we've done more thorough testing.
Since this is mostly a code dump, I plan to address blocking and minor
feedback only. If there are design issues that are non-critical, I will
open follow up items.
The next step will be to start adding more detailed tests.
Ryan Nowak