* Add models & mapping
* Add controller
* Add create async to service
* Add auth policy
* Implement delete
* Rename response model
* Implement updateAsync
* Refactor update to use own model
* Implement all async counterparts for IMemberService
* Add tests
* Implement update member group mapping
* Dont fail if updating the current user group
* Return not found if not found
* Add missing OperationResults to MemberGroupOperationStatusResult
* Add 404 to response type
* Update openapi
* Update OpenApi
* Update OpenApi.json