[lib] Fetch ENS name in useMessagePreview
Summary:
This introduces the first instance of ENS name fetching in the web and native apps.
It involves a new Provider and hook.
Depends on D6375
Test Plan:
Videos of the ENS name "flashing in":
| native | web |
Reviewers: atul
Reviewed By: atul
Subscribers: tomek
Differential Revision: https://phab.comm.dev/D6376