Add notice compatibility routes for other frontends
Fixes #1785 (closed)
Adds several notice compatibility routes:
-
/@:nickname/:id
- Mastodon -
/@:nickname/posts/:id
- Soapbox FE -
/:nickname/status/:id
- Twitter
Now frontends can make a choice between any of these routes, and metadata will be properly returned by them (as well as StaticFE support).