clone-bundle: rename the methods and wireprotole command
The current naming is very clone centric, since then, the url scheme was moved
to a more generic wording to make room for other use-cases (e.g. pull bundles).
We apply the same logic to the internal API and, very important prior to the
release, to the wire protocol command.
Our full contribution guidelines are in our wiki, please see:
https://www.mercurial-scm.org/wiki/ContributingChanges
If you just want a checklist to follow, you can go straight to
https://www.mercurial-scm.org/wiki/ContributingChanges#Submission_checklist
If you can't run the entire testsuite for some reason (it can be
difficult on Windows), please at least run `contrib/check-code.py` on
any files you've modified and run `python contrib/check-commit` on any
commits you've made (for example, `python contrib/check-commit
273ce12ad8f1` will report some style violations on a very old commit).