Add group repository storage move endpoints
What does this MR do?
In this MR we add the necessary endpoints to perform group repository storage moves. We also add endpoints to move them in bulk.
Does this MR meet the acceptance criteria?
Conformity
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Changelog entry -
Code review guidelines -
Merge request performance guidelines -
Style guides -
Separation of EE specific content
Related to #299065 (closed)
Edited by Francisco Javier López (ex-Gitlab)