Authoring: Add analyzer with code fixes

[j0shuams]

Today we have similar behavior as Windmdexp for authoring components: compile time errors with diagnostics for code not valid for Windows Runtime. We would like to go further and add an analyzer with code fixes that allow the user to fix code that would raise a diagnostic. An example scenario is when users use the generic List type, intellisense offers a codefix to use IList instead.