[augmentations] Angular compiler implementation

[itsjustkevin]

[dart-github-bot]

Summary: The issue concerns the implementation of the Angular compiler within the Dart language, potentially highlighting a bug, performance issue, or feature request related to this integration.

[ykmnkmi]

Which version of angular - community or internal?

[johnniwinther]

@bwilkerson Is this maintained by the analyzer team?

[fishythefish]

Removing area-web since AFAIK, the web compilers team isn't maintaining this. If this is a tracking bug for applying augmentations to the internal Angular compiler, we should probably close this issue and file one internally.