[native][web] read aux user store on app startup

Summary:
This gets aux user infos from sqlite and populates the redux store

Depends on D11528

Test Plan:
Confirmed that the sqlite db and the redux store are the same:

Reviewers: kamil, ginsu, atul

Reviewed By: ginsu

Subscribers: ashoat, tomek

Differential Revision: https://phab.comm.dev/D11529