[I] Feature: support filter before agg for Acero. [arrow]

["Light-City (via GitHub)" <gi...@apache.org>]

Light-City opened a new issue, #41253:
URL: https://github.com/apache/arrow/issues/41253

   ### Describe the enhancement requested
   
   
   doc: https://www.postgresql.org/docs/current/tutorial-agg.html
   
   just like postgresql, we can filter batch before scalar agg and group by agg.
   
   ```sql
   count(*) FILTER (WHERE temp_lo < 45)
   ```
   
   ### Component(s)
   
   C++


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