feat: replace simple with complex UDF implementation #1003
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the reason being is that we can access captured python function and serialize it if needed
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Which issue does this PR close?
Closes #.
Rationale for this change
As I would like to put more effort into ballista python integration, we need to expose captured python function used in udf and expose them to logical codec so they can be serialised and shipped to executors. If we manage to ship udf to executors we can have another go to support udaf.
we had short discussion in the past at https://discord.com/channels/885562378132000778/1234886350398947419/1315069081895964682
What changes are included in this PR?
Are there any user-facing changes?