oauth: add oauth scope permissions, place.stream.authFull permission-set

feat: move log in/sign up to top right

fix: misc. chat fixes

fix: video settings pops up properly on full screen

multistreaming: better logging, better shutdown

fix: astro uses global favicon

fix: block javascript URIs (they are most likely malicious anyways)

fix: add overflow hidden to stream monitor to fix square corners

Remove unused margin and adjust padding/positioning in ChatBox. Update
Chat component background color to use theme and adjust ChevronDown
margin.

- Adjust emoji suggestion trigger to require at least 3 characters.
- Implement a `pointerEvents="box-none"` overlay for the emoji selector
to prevent accidental clicks on underlying elements.
- Refactor the "Scroll to bottom" button in the chat component to use
styled atoms for better maintainability and a cleaner look.
- Wrap emoji and mention suggestion lists in `ScrollView` components to
enable scrolling when the lists exceed the maximum height.

feat: add scroll to bottom button in chat

config: allow RTMPS addon and regular at the same time

multistreaming: add RTMP push

feat: hide login if logged in

feat: branding system

Delegated moderation lexicons