Implement statistics estimation for partition columns

[rdettai]

Is your feature request related to a problem or challenge? Please describe what you are trying to do.
The ability to read partitioned tables is added the the ListingTable in #1141. As partitions are constant columns, we could estimate their statistics pretty accurately (currently they are left as Default.

Describe the solution you'd like
Replace default with a column statistics that has:

• min value
• max value
• distinct count
• null number as 0

[andrei-ionescu]

I think first we need to fully support statistics on nested fields. Please see this comment: #1392 (comment).

[houqp]

I believe this can be worked on in parallel. Once we implement the solution mentioned in the comment you linked, it should work out of the box for nested columns.