Feature: add listview rebuild + cleanup

[connortsui20]

Tracking Issue: #4699

Adds a rebuild method on ListViewArray that allows us to rebuild the array to specific shapes that we want (via a ListViewRebuildMode enum).

This will make it easier to implement an optimization (that we are tentatively calling IsZeroCopyToList) that tells us the ListViewArray has no gaps nor overlaps from the views into the elements buffer, and that the views are all sorted and in order.

I also added an unimplemented OverlapCompression rebuild mode if we ever want to do that.

Also does some cleanup of other ListView functionality.