Support app.relay.emoji_confetti on jumbo emoji clicks with canvas physics,
per-emoji particle profiles, and a fixed overlay that does not affect scroll.
Also add a Vite playground for live component previews and theme hover preview.
* WIP - support room version 12
* add room creators hook
* revert changes from powerlevels
* improve use room creators hook
* add hook to get dm users
* add options to add creators in create room/space
* add member item component in member drawer
* remove unused import
* extract member drawer header component
* get room creators as set only if room version support them
* add room permissions hook
* support room v12 creators power
* make predecessor event id optional
* add info about founders in permissions
* allow to create infinite powers to room creators
* allow everyone with permission to create infinite power
* handle additional creators in room upgrade
* add option to follow space tombstone
