[lib] Create a store in redux for the invite links

Summary:
A couple of screens require invite links info, and it wasn't an issue until I added an option to update a link - then the data displayed on the screens was inconsistent. The approach with redux should be used from the beginning.

It will also significantly simplify introduction of invite link updates (if we decide to have them).

Depends on D7848

Test Plan: Tested in combination with the rest of the stack: updating a link on one screen and opening another screen where that link is displayed should show the current value.

Reviewers: bartek, kamil, inka

Reviewed By: kamil

Subscribers: ashoat, atul

Differential Revision: https://phab.comm.dev/D7877