Provide a better way to filter GitHub repositories by organization / collaborators / etc.
### Summary
User might have tons of repositories and filtering might not be enough. We need to provide user a way to narrow down his/her preferences by introducing additional filters
This issue is split from https://gitlab.com/gitlab-org/gitlab/-/issues/332123+
### Proposal
- We're using tabs because we want to display a subset of the results by default.
- Tabs also let us scope the search results and customise each tab with a unique filter for the organisation tab,
- When a user selects the organisation tab, they see results from all organisations by default. They can use the dropdown to show & search for repos under just one organisation.
- We'll update to a keyset pagination in order to unify behaviors across importers.

epic