Cover re-running `repo init -g` to add & remove projects,
`<include groups=...>`, `platform-*` groups & `--platform`, and groups
combined with a superproject.
Let `RepoClient.list_projects` pass args to `repo list`.
Bug: 566270944
Change-Id: Id333078fd18d38962d8b725ae9bd87f4976c3112
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/648547
Tested-by: Brian Gan <brgan@google.com>
Reviewed-by: Gavin Mak <gavinmak@google.com>
Commit-Queue: Brian Gan <brgan@google.com>
