See USAGE for documentation.
This tool will be needed to upload to the upstream repository, as
we will no longer be able to use repo.
Currently, for testing it still points to the chromiumos repository.
BUG=b:221088786
TEST=Follow USAGE
Change-Id: I4a8d88a8354942f0ddfb7f9420ef1cf7f5885867
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/3687419
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>