[sqlite] add aux users table for aux user store data

Summary:
Creates the sqlite database table for aux user store

Depends on D11506

Test Plan:
Tested on native and made sure aux user table was being initialized. Went through new schema flow by setting new simulator target

Reviewers: ginsu, kamil, atul

Reviewed By: atul

Subscribers: ashoat, tomek

Differential Revision: https://phab.comm.dev/D11507