Replace tokens with ones that are part of the Design System and are either the same or very similar

Update typography Tokens
Use new Theme interface

Fix elements to use correct tokens

* feat(base): created Button.tsx and IconButton.tsx

* feat(polls/native) style updates

Skip the welcome page for now, until we can remove the audio / video
toggle.

* add(highlight): mobile initial flow

* fix(hightlight): get meeting fqn on mobile

* fix(dynamic-branding): extract fqn on mobile

* fix(highlights): remove local fqn extraction and grounp dispatches in batch

* fix(dynamic-branding): check if state is defined in extract fqn

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.

Updated screens with new ui on mobile

* feat(security) Security Options screen

* feat(conference) updated native navigation bar and toolbox styles

- apply theming to various buttons

Introduce navigation for all in-conference screens.

- Fixed background color for all participants context menus
- Removed connection status from ReactVideoMenu and added it for local participants
- Removed AVModeration comments on mobile
- Show on stage option visible only when participants pane is closed