[lib] Migrate the reports and update store type

Summary:
Move the reports from user store to report store.

Depends on D9417

https://linear.app/comm/issue/ENG-5162/start-sending-user-inconsistency-reports-to-the-server

Test Plan: Check if teh reports are moved on native. Also, verify that web clients still work.

Reviewers: kamil, bartek, inka

Reviewed By: bartek

Subscribers: ashoat, wyilio

Differential Revision: https://phab.comm.dev/D9418