Expose 'event_types' parameter for all applicable queries

[jc-harrison]

The event_count and location_event_counts query kinds have an event_types parameter that can be used to select a subset of the available CDR types. Internally, this sets the table parameter of the FlowMachine query objects.

Most other FlowMachine queries have an equivalent table parameter, but the API-exposed forms of these queries don't have an event_types parameter. Adding one would be useful.