[native] Introduce a restore screen

Summary:
Add a new screen where a user can restore the account using a password or SIWE.

https://linear.app/comm/issue/ENG-9679/create-a-screen-where-user-can-choose-between-usernamepassword-and

The restore screen

The prompt screen after this diff - no changes

Depends on D14066

Test Plan: Checked that this screen looks correctly and clicking the actions navigates to appropriate screens.

Reviewers: kamil, angelika, bartek, ashoat

Reviewed By: ashoat

Subscribers: ashoat

Differential Revision: https://phab.comm.dev/D13907