Extract 'sync_code_owner_approval_rules' service

Problem to solve

We added EE::ProtectedBranches::CreateService#sync_code_owner_approval_rules as part of moving code owners onto protected branches, but I think we can extract this logic into a new service class.

Proposal

We'll want this to be able to sync existing MRs after creating new approval rules https://gitlab.com/gitlab-org/gitlab/-/blob/master/ee/app/services/ee/protected_branches/create_service.rb#L25

Acceptance Criteria:

• This logic is contained in it's own service class

added to epic &4076 (closed)

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Initial weight: 2

Extracting code into its own service.

mentioned in issue #233318 (closed)

mentioned in issue #235073 (closed)

mentioned in issue #235461 (closed)

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mentioned in issue create-stage#12729 (closed)

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Setting label(s) Category:Source Code Management based on groupsource code.

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mentioned in issue create-stage#12760 (closed)

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Adding backend-weight2

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changed title from Extract to Extract 'sync_code_owner_approval_rules' service

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mentioned in issue create-stage#12773 (closed)

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I confirm backend-weight2 .

Thank you @vyaklushin

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Moving to the %Backlog

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Hi @sean_carroll, this says maintenancerefactor and typefeature. I guess this does not make sense. I am changing it to typemaintenance. An option would also be closing this all together.

@tlinz thank you, I've removed it from the Epic per the discussion in Slack, but will leave it open as it is a useful refactoring.

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removed from epic &5045 (closed)