provide extra arguments for custon aggergation function

[sgratzl]

according to the docs the aggregation function has the following signature:

aggregate: String | Function(leafValues, aggregatedValues) => any

https://react-table-omega.vercel.app/docs/api/useGroupBy

I'm currently implementing some custom aggregation functions and I would needs access to the column itself. e.g. the aggregateValue function gets as an additional argument the column. I'd love to have such an argument also in this function. My use case is that, I'm also computing some global statistics for each column and want to access them while creating the aggregate.

[ViieeS]

In my case I use external parents object for aggregated values, so I need groupByID, groupByVal, column. The only way I found is to use Aggregated renderer, but it's quite tricky.