api: Add merge request approvals API
A merge request to add Merge Request-level MR approvals API.
Reference: https://docs.gitlab.com/ee/api/merge_request_approvals.html#merge-request-level-mr-approvals
Edited by kenkoooo
A merge request to add Merge Request-level MR approvals API.
Reference: https://docs.gitlab.com/ee/api/merge_request_approvals.html#merge-request-level-mr-approvals