* Add new setting to store section state
* Store section state in device settings
* Wire up section header view model and new section functions
* Update room list vm tests
* Add e2e test on section state persistence
* Use more intuitive syntax for SectionExpansionState
* Formatting
* Fix chats section staying expanded
* Add CHAT section case in e2e test
Any UTs for vector-web layer components or functionality should go here.
This used to contain the UTs for notifications before they got moved to react-sdk.