[Step 2] Add `CanMoveRepositoryStorage` concern to groups

In #218987 (closed) we refactored all the common logic into the CanMoveRepositoryStorage and it was added to projects and snippets.

Now, we need to add it as well to groups but, in the EE part, since it will only take effect when group wikis are enabled. Besides, it can also raise some errors since the customization is done in EE.

We need to reimplement the method git_transfer_in_progress and adapt it to the group repository resources.