Support for Delim Join/Get Relations

[pdet]

This PR introduces support for generating and consuming query plans with flattening subquery operators (i.e., delim joins and gets). It also now supports full TPC-H roundtrip through DuckDB.

It's important to note that this is still highly experimental and depends on

• A DuckDB PR that supports creating Delim Join and Get Relations Create Delimiter Join and Delimiter Get via Relations duckdb/duckdb#12953
• Substrait changes in the algebra.proto file. feat: add operators to support duplicate eliminated joins substrait#695

Regarding the substrait changes, we need to add a JOIN_TYPE_MARK to the JoinRel and add two new relations.

DelimGetRel and DelimJoinRel.

DelimGetRel mainly has to store the types of delim columns.

e.g.,

message DelimGetRel{
   RelCommon common = 1;
   repeated  Type  delim_types = 2;
}

On the other hand, DelimJoinRel basically has the same attributes as a JoinRel. The difference is that it adds the duplicate_eliminated_columns and an optimization if the delim is flipped or not.

e.g.,

 // The set of columns that will be duplicate eliminated from the LHS and pushed into the RHS
  repeated Expression duplicate_eliminated_columns = 7;

  // If this is a DelimJoin, whether it has been flipped to de-duplicating the RHS instead
  bool delim_flipped = 8;

Besides all that, it was also necessary to two join types. Namely JOIN_TYPE_RIGHT_SEMI and JOIN_TYPE_RIGHT_ANTI;

cc @EpsilonPrime @ianmcook

[pdet]

@EpsilonPrime, following up on our conversations, I managed to implement a version of the duplicate eliminated operators that work with the Reference Relations.

Basically, the Duplicate eliminated Get looks like this:

message DelimGetRel{
   RelCommon common = 1;
   ReferenceRel input = 2;
   repeated Expression.FieldReference column_ids = 3;
}

The input is the subtree that is duplicate eliminated from the duplicate eliminated join, and the column IDs of the returned columns that are the duplicate eliminated from the input. A reference relation is also used on the duplicate eliminated join.

The relevant proto changes are in pdet/substrait#1

cc: @ianmcook