Add users as trending

It would be nice if along with trending repos, trending users were also included. Rough outline of work

• Follow the sh.tangled.graph.follow lexicon
• Use the same thresholds and can record them using the same Db tables
• If they meet the threshold make a post, use constellation to display their following count, display their profile description from their sh.tangled.actor.profile record (can use slinghot to get that), and can use their pfp as the picture
• Record the subject as post made for cooldown

Example of a follow record https://pdsls.dev/at://did:plc:rnpkyqnmsw4ipey6eotbdnnf/sh.tangled.graph.follow/3lzydaztzn622