[N7 Account Settings] Create Display Name page

[Beamanator]

Tracking issue: https://github.com/Expensify/Expensify/issues/182122

Detailed section of doc here: https://docs.google.com/document/d/17akqrbC-w8FqEoDLvcLmrX6iw4uaVrT_xlwAl-IhEzE/edit#heading=h.do06ijqotcb0

Note: This has to be built at the same time or after the UpdateDisplayName command is live (see https://github.com/Expensify/Expensify/issues/238724)

[Beamanator]

On hold for WhatsApp Quality

[Beamanator]

Still on hold for now, might pick this up next week as discussions from here (#11795) are indicating this could be useful to implement sooner rather than later