MM-43300: Calls v2 first cut (#6475)

* Android and iOS requirements

* external types

* babel config for calls, package.json for calls dependencies

* state in rxJS; tests

* actions, client/rest, websocket events, constants

* webrtc connection logic

* calls components / screens

* handle peer destroyed gracefully

* PR comments

* remove ViewPropTypes from mocks; no need to ignore error in LogBox

* calls.d.ts -> calls.ts; i18-extract

* @app/products/calls -> @calls

* PR comments; test cleanup

* Revert "remove ViewPropTypes from mocks; no need to ignore error in LogBox"

This reverts commit f9bd171a54.

* working on typing withServerUrl

* added exportedForInternalUse instead of commenting "internal export"

* better switchToThread in call_screen

* i18n

* typed withServerUrl

ios/Podfile

@@ -23,6 +23,7 @@ target 'Mattermost' do
 
   permissions_path = '../node_modules/react-native-permissions/ios'
   pod 'Permission-Camera', :path => "#{permissions_path}/Camera"
+  pod 'Permission-Microphone', :path => "#{permissions_path}/Microphone"
   pod 'Permission-PhotoLibrary', :path => "#{permissions_path}/PhotoLibrary"
   pod 'React-jsi', :path => '../node_modules/react-native/ReactCommon/jsi', :modular_headers => true
   pod 'simdjson', path: '../node_modules/@nozbe/simdjson'