Column API setAggregationFn

[Sergionx]

Many projects require dynamic changes to a column’s aggregation strategy at runtime.
Currently, I had to build a workarounds using states manually when I want a column to switch from one aggregation type to another (e.g., sum to count).
Providing a setAggregationFn method would create a straightforward pathway to swap aggregators on the fly, enhancing flexibility and reducing the need for custom hooks or ad-hoc state management.
I imagine it the methodlooking like this: column.setAggregationFn(key)