* feat(web): add server-setup page for when bot isn't in the server picked
* chore: move contexts into their own folder
* feat(web): add recent guilds context, and app shell helper context
* feat(web): show recent guilds in masthead
* feat(web): functionally add recents to servers list
* fix(web): correct styling for servers listing recents/all headers
* fix(web): correct some type issues with appShellProps
* fix(web): don't show ServerListing recents when recents is empty