Add Bindings for FILTER (WHERE) clause

[jdye64]

Is your feature request related to a problem or challenge? Please describe what you are trying to do.
Thanks to @yjshen who has added support for FILTER(WHERE) clauses. We should know add those to our Python bindings. DataFusion PR at apache/datafusion#5868

Describe the solution you'd like
Refactor existing codebase to account for new variant type and extend aggregate bindings to match that of upstream.

Describe alternatives you've considered
None

Additional context
None

[timsaucer]

Closing because this is now supported in DF 42.0.0. Please reopen if you continue to have problems.