feat: marquee on handles #59

super long handles should automatically scroll! on profiles and account switchers. on posts they should still probably be truncated. but pronouns should be prioritized or at least made visible more often if that's what a user wants.

looks like there's a package compatible with React Native https://github.com/animate-react-native/marquee

will need to figure out how to measure the length of text (maybe better than bluesky does it, since they often truncate it too early at specific points?) https://witchsky.app/profile/piinro.bsky.social/post/3mexnfn7qbs2j