Support for full_outer_join to take a PartitionedTable.Proxy #6337
Description
As a user, I want full_outer_join to take a PartitionedTable proxy object so that I can perform a full_outer_join on a large table by partitioning it.
full_outer_join(left.partition_by(['A', 'B']).proxy(), right, ['C','D']).target.merge()