Support addressing parent group of a project in CODEOWNERS
## Problem to solve Addressing a parent group from project hierarchy to CODEOWNERS file is not currently supported. ## Further Details If in group `A`, user creates project `P` adding `* @A` to CODEOWNERS has not effect. ## Proposal Support addressing `@group` from a parent project in CODEOWNERS just like users can address groups from the project where CODEOWNERS is created. ### Links https://gitlab.com/gitlab-org/gitlab-foss/issues/53182#note_209079646
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