[BUG] Add ExistenceJoin to supported joinType

[nartal1]

Describe the bug
SortMergeJoinExec and BroadcastHashJoinExec is shown as Unsupported Execs where the joinType is ExistenceJoin. We currently support ExistenceJoin - NVIDIA/spark-rapids#589 .

Expected behavior
JoinExecs should not be classified as unsupported execs if jointype is ExistenceJoin.

Environment details (please complete the following information)
OnPrem, all CSP's

[amahussein]

It is interesting to see that ExistenceJoin has been supported for over 18-months while the tools is not synced-up.
IMHO, we need to introduce a process similar to "spark audit" in which commits added into the RAPIDS plugin is processed.

There are some other questions that need to be answered:

• Going backward to review any missed features in the plugin and opportunities to improve profiling and recommendations.
• Rethink how filing new features can better integrates with "Tools". In that scenario, "Tools" is part of the story/design of the new feature.