dev.knotless.getActorActivity

How much an account did on each day since a time, by kind, as an appview has indexed it, and its repositories' pushes: when each was last pushed to, and how often on each of those days. Days are dates in the zone `tz`, and only days with something done are listed. Repositories and accounts taken down count for nothing. No authentication needed; asked with a service token or the pages' session cookie by the account itself, or by a member of its private repositories, those it may read are among `repos` too, and the answer is the asker's alone.