mongodb/v1.0.0: add mongodb (#28) (#29)
* add mongodb * revert cover.out * update LICENSE and fix variable name * update comments (cherry picked from commit d476e18030df7b03ff19bbd1aea5bef69ec2e6f0) Co-authored-by: MengYinlei <43751910+YoungFr@users.noreply.github.com>