[WIP] Add team option to automatically add new organization repos

[davidsvantesson]

This PR will add a team setting that allows to automatically add new (or transferred) repositories to a team. It only affects when a new repo is created in organization (including migrated or transferred) by adding the repository to the team's access.

Screenshot

Left todo for this PR:

• Make proper translation strings
• Update API
• Create database migration
• Add tests

[lafriks]

imho for this there is better option that team has all org repositories (there is even PR for this already)

[guillep2k]

There might be cases where this is useful, but it doesn't make much sense if your teams are separated by project. In my company, developers that deal with some clients' projects can't see government-related projects and vice-versa, and nevertheless they are all below the same organization (company branch).

[lafriks]

But anyway this does not guarantee that no incorrect repository is not added to the team.

[davidsvantesson]

@lafriks I had missed that PR (#6791). What I can see that PR has two differences from mine:

• All repositories are added when setting is activated
• It is not possible to remove a repository from the team if it has all repositories setting

Drawback with first point, because of how that PR is designed, is if someone add the setting by mistake, it can be a lot of work to restore previous setting (Specially if there is no warning this will happen). Second point can be discussed and probably have both benefits and drawbacks, but it makes sense given the first point.

Anyhow I don't think it makes sense and will be confusing to have both these PRs, so I close this in favor of #6791.