feat: redesign match play and add broadcast tooling

scripts/migrations/0009-match-lobby-kind.sql

@@ -0,0 +1,4 @@
+-- Matches now remember where their lobby lives. Simulated lobbies are numbered
+-- from 2,090,000,000 up, far above real osu! match ids.
+UPDATE match SET config = config || '{"lobby":"simulator"}'::jsonb
+WHERE osu_lobby_id >= 2000000000 AND NOT (config ? 'lobby');