add reference to shared project
ios: add navigation controller
ios: customize login view
ios: add buttons/textfields outlets
ios: connect login / signup actions
settings: set iOS for principal target
ios: update constraints
ios: implement signup view controller
ios: implement login view controller
ios: connect outlet for login vc
ios: scaffold implementation for login action
ios: customize keyboard for login vc
ios: customize keyboards for signup vc
ios: scaffold implementation for sign up vc
ios: root vc - cosmetic changes
ios: login vc - pop to root vc after log in
ios: root vc - add new constructor
shared: add view model + models groups
Revert "ios: root vc - add new constructor"

This reverts commit 01e9c7acdc24c3212f8e522405dfb9db1a269566.
ios: login vc - remove pop to root vc call