[Meta] Implement Send & Receieve capabilities for Close Remote Tab

[skhamis]

Closing tabs remotely has been completed on Desktop and Android and the Sync team wants to implement on iOS. Link to the Sync Epic: https://mozilla-hub.atlassian.net/browse/SYNC-4089

I think the best way to go about this is to split the send & receive into separate PRs as that'll make it easier to review and reason about (sending will have significantly more UX to cover).

[ ] Ability to receive close tab commands from other devices [ ] Ability to send and undo close tab commands to other devices [ ] Notifications when receiving close tab commands and deeplinking to the closed tabs when notification is tapped

┆Issue is synchronized with this Jira Task