Is your feature request related to a problem? Please describe.

A recent PR implements dynamically generated Queryables (#351). We can do something similar for Aggregations.

Currently, new aggregations require a change to the API code. We have to add a mapping here

and the aggregation here:

Describe the solution you'd like
It would be great to have histogram and total count aggregations available for all properties without configuring that in the code. I think we can follow the same approach from#351