[FEA] Java: Table.mixedInnerJoinGatherMaps variant accepting a pre-built HashJoin

Is your feature request related to a problem? Please describe.

Table.innerJoinGatherMaps(HashJoin) lets a caller build the right-side hash table once and probe many times. Table.mixedInnerJoinGatherMaps does not accept a pre-built hash table and builds it on every call. This wastes time and memory.

Describe the solution you'd like

Table.mixedInnerJoinGatherMaps and Table.mixedLeftJoinGatherMaps overloads that take HashJoin

Describe alternatives you've considered

None yet. Any recommendations?

Additional context

• https://github.com/rapidsai/cudf/issues/22124