These changes come out of discussion in the team; we want to make use of
git trailers and improve the quality of our commit messages. Starting by
adding more hints to the commit suggestions. Includes some minor cleanup
of the hooks, and hopefully also improves tests so that they don't
interfere with interactions with non-Keyman repos.
Note: the scopes list may need maintenance as the list still includes
sub-scopes and 'oem'.
This change allows to add fixup commits by running the command
`git commit --fixup=<sha>` without complaining about the commit
message not being in conventional commit format. (Running the
git command will result in the commit title of the referenced
commit with `fixup!` prepended. It will later be squashed with
the referenced commit in a git rebase.)
This change allows a different project to override the definitions
by providing a local `commit-msg-defs` file while still sharing the
`commit-msg` hook. Other projects might have a different set of
scopes.
Adds support for conventional commit style validation of all commit
messages and makes configuration against all Keyman repos
straightforward with the configure-repo.sh script.
