[SPARK-12798] [SQL] generated BroadcastHashJoin

A row from stream side could match multiple rows on build side, the loop for these matched rows should not be interrupted when emitting a row, so we buffer the output rows in a linked list, check the termination condition on producer loop (for example, Range or Aggregate).

Author: Davies Liu <davies@databricks.com>

Closes #10989 from davies/gen_join.