Re: [PATCH v5] clone: set submodule.recurse=true if user enables feature.experimental flag

Mahi mentioned wanting to rework her commit to use a config besides
'feature.experimental' for this same behavior, so hopefully we will see
that change come through soon - but today is also the last day of her
internship, so we may not be so lucky.

This change is pretty much good to go! I implemented it under
`submodule.stickyRecursiveClone`. The commit is actually in the PR.
Just wanted to hear more from you guys before submitting :)