New endpoints are:
POST :project_id/(issues|merge_requests)/(:issue_id|:merge_request_id)/time_estimate"
POST :project_id/(issues|merge_requests)/(:issue_id|:merge_request_id)/reset_time_estimate"
POST :project_id/(issues|merge_requests)/(:issue_id|:merge_request_id)/add_spent_time"
POST :project_id/(issues|merge_requests)/(:issue_id|:merge_request_id)/reset_spent_time"
GET :project_id/(issues|merge_requests)/(:issue_id|:merge_request_id)/time_stats"
Also, mutualize AccessRequests and Members endpoints for Group &
Project.
New API documentation for the AccessRequests endpoints.
Signed-off-by: Rémy Coutable <remy@rymai.me>