This auto-formats all *.dart files in the repository outside of the
`engine` subdirectory and enforces that these files stay formatted with
a presubmit check.
**Reviewers:** Please carefully review all the commits except for the
one titled "formatted". The "formatted" commit was auto-generated by
running `dev/tools/format.sh -a -f`. The other commits were hand-crafted
to prepare the repo for the formatting change. I recommend reviewing the
commits one-by-one via the "Commits" tab and avoiding Github's "Files
changed" tab as it will likely slow down your browser because of the
size of this PR.
---------
Co-authored-by: Kate Lovett <katelovett@google.com>
Co-authored-by: LongCatIsLooong <31859944+LongCatIsLooong@users.noreply.github.com>
## Description
This converts some usages of `RawKeyEvent` to `KeyEvent` to prepare the repo for deprecation of `RawKeyEvent`, and swaps out the `raw_keyboard.dart` manual test for `hardware_keyboard.dart`.
## Related Issues
- https://github.com/flutter/flutter/issues/136419
## Tests
- Just refactoring code, no semantic changes.
