* bskylink: scaffold service w/ initial config and schema * bskylink: implement link creation and redirects * bskylink: tidy * bskylink: tests * bskylink: tidy, add error handler * bskylink: add dockerfile * bskylink: add build * bskylink: fix some express plumbing * bskyweb: proxy fallthrough routes to link service redirects * bskyweb: build w/ link proxy * Add AASA to bskylink (#4588) --------- Co-authored-by: Hailey <me@haileyok.com>