aggregator: Add sink_event_pre_queue() and sink_query_pre_queue() vfuncs
These allow subclasses catching serialized events/queries before they're queued up.
CC @meh @thiblahute
On top of !250 (merged)
These allow subclasses catching serialized events/queries before they're queued up.
CC @meh @thiblahute
On top of !250 (merged)