Add ability to filter Add-ons by invite group

What does this MR do and why?

Relates to https://gitlab.com/gitlab-org/gitlab/-/issues/431501+. This MR adds the filter Group Invite to the Search and Sort table of Code Suggestions. (The backend is not yet implemented. Here, we're providing only frontend scaffolding/implementation.)

Note that the feature does not impact current UI, as the FF is disabled.

MR acceptance checklist

Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.

Screenshots or screen recordings

Screenshots are required for UI changes, and strongly recommended for all other merge requests.

Group Invite filter	Group Invite filter: YES	Group Invite filter: No

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

1. Needs both gdk and CustomersDot running (setup guide)
2. In Rails console, enable Code Suggestions Feature.enable(:hamilton_seat_management)
3. In Rails console, enable the filtering capabilities Feature.enable(:enable_add_on_users_filtering)

To assign Code Suggestions seats to your group:

1. In Rails console, add_on = GitlabSubscriptions::AddOn.find_or_create_by!(name: "code_suggestions") {|e| e.description = "Test"}
2. In Rails console, GitlabSubscriptions::AddOnPurchase.create!(add_on: add_on, namespace: Namespace.find(<you-name-space-id>), expires_on: 21.month.from_now, quantity: 5, purchase_xid: 'A-S0002')
3. Visit any group or project member pages such as http://127.0.0.1:3000/groups/flightjs/-/usage_quotas#code-suggestions-usage-tab