refactor(bosses): DRY bosses so we can share code between tavern boss &
party boss
feat(dilatory): model updates for tavern bosses
feat(bosses): add limit-break for bosses
feat(dilatory): load tavern boss on each cron, removing caching for now (was too buggy)
feat(dilatory): scene damage + boss def/str. bug fixes, tests
perf(bosses): bindonce for some quest bindings