Add support for `RegExpExtract` and `RegExpExtractAll`

[andygrove]

What is the problem the feature request solves?

Spark docs:

• https://spark.apache.org/docs/latest/api/python/reference/pyspark.sql/api/pyspark.sql.functions.regexp_extract.html
• https://spark.apache.org/docs/latest/api/python/reference/pyspark.sql/api/pyspark.sql.functions.regexp_extract_all.html

Describe the potential solution

No response

Additional context

No response

[rishabhjain1712]

@rishabhjain1712

[rishabhjain1712]

Hi @andygrove
I’d like to work on this issue and add support for RegExpExtract and RegExpExtractAll.

Could you please point me to the parts of the codebase where similar functions (like other string or regex expressions) are implemented, so I can make the additions in the right place?

Thanks!