Fix imports

* feat(prejoin) created native Prejoin screen

* feat(prejoin) fixed useState callback and updates warnings

* feat(prejoin) created styles file

* feat(prejoin) moved nav from middleware to appNavigate, created native DeviceStatus

* feat(prejoin) updated styles

* feat(prejoin) review remarks pt. 1

* feat(prejoin) removed unused styles

* feat(prejoin) review remarks pt. 2

* feat(prejoin) comment fix

* feat(prejoin) added header title

* feat(prejoin) review remarks

* feat(lobby) updated styles

* feat(prejoin) updated lobby screen header button functionality

* feat(prejoin) review remarks pt 3

* feat(welcome) removed VideoSwitch component

* feat(mobile/navigation) fixed linter

* feat(welcome) moved isWelcomePageEnabled to functions.ts

* feat(mobile/navigation) screen options and order updates

* feat(app) review remark

* feat(welcome) added translation for screen header title and fixed build

* feat(mobile/navigation) added screen title translation and created screen option

* feat(mobile/navigation) fixed screenOptions import

* feat(mobile/navigation) added DialInSummary title translation, fixed animation and close button

* feat(welcome) fixed build

* feat(welcome) removed extra check

* feat(prejoin) review remarks pt 4

* feat(prejoin) added Join in low bandwidth mode btn

* feat(welcome) changed welcome screen header title

* fixup lobby close

It will just flash for a split second and all it does is dispatch
readyToClose, so do it directly instead.

Converted LoadConfigOverlay to a JitsiScreen component that right now is part of navigation as ConnectingPage, plus I
separated appNative and other actions into web and native.

The CONFERENCE_WILL_LEAVE reducer in base/conference wipes the state so
we cannot rely on the old room value.

We may want to revisit this in the future.