This change adds python type and formatting checks and
consolidates code health checks in ./tools/health-check.
Dealing with relative imports in python is tricky, so
we are making ./tools/impl a proper package with no
directly executable files.
Some of the bash shorthands in ./tools had to be converted
to python for this.
To make the new checks pass, we run the formatter and fix
some mypy type checks.
TEST=./tools/health-check
BUG=b:218559722,b:219965702
Change-Id: Ie18d3d6dd2f5a033141e167a6e1aa762791941d6
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/3558592
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Commit-Queue: Dennis Kempin <denniskempin@google.com>
