Add analyzers and code-fixes to help adoption of source-generated COM (#87223)

Add analyzers and code-fixes to help adoption of source-generated COM (#87223)

* Add first pass of the "convert to generated COM interface" analyzer and add tests for the various other analyzers we are going to introduce.

* Get all analyzer-specific components of the "convert" tests passing.

* Implement all interface-attribute-level changes in the code fixer.

* Add bool marshalling insertion logic to the fixer.

* Add support for removing shadowing members from interfaces.

* Rename fixer

* ActiveIssue the new tests

* Implement basic AddGeneratedComClass analyzer/fixer

* Add ComHosting + GeneratedComInterface analyzer implementation.

* Implement the "runtime COM APIs with source-generated COM types" analyzer.

* Factor out a base class from the ConvertToLibraryImportFixer so we can share it with the ComInterfaceGenerator-family of fixers.

* Move more of the ConvertToLibraryImportFixer to use SyntaxGenerator APIs instead of dropping to C#-specific syntax APIs (improves consistency throughout our code fixes)

* Move support for specifying explicit boolean marshalling rules up to the base class.

* Move the code fixes in ComInterfaceGenerator over to using the ConvertToSourceGeneratedInteropFixer base type.

* Remove use of multicasted delegates and use a more traditional "array of delegates" model.

* Do some refactoring to move more into the new fixer base class.

* Remove custom CodeAction-derived types now that we have a record type to represent fixes from the subclasses.

* Make sure we make types and containing types partial

* Fix negative test.

* Add tests for transitive interface inheritance and add iids.

* Change bool parsing for internal parsing and add warning annotation text. Update diagnostics list md.