* watchOS support for FirebaseAuth.
This is a redo of #5585, which was a re-implementation of #4632. This
ignores any changes to GoogleUtilities, those will be done in a later
PR to create a common KeyedArchiver utility.
Co-authored-by: Harri Hohteri <harri.hohteri@gmail.com>
* Fixed lint errors, added GHA tests.
* Enabled GHA for PRs as well.
Co-authored-by: Harri Hohteri <harri.hohteri@gmail.com>