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[EPIC] Full lambda support #21172

Description

@gstvg

Some features haven't been implemented and others pulled out from #18921 #21679 to keep it from getting too large (>5k LOC) and should be implemented in follow on PR's:

Major features:

Minor features:

  • Named parameters like ScalarUDF already supports: func(a => 3)
  • Expr simplifier optimizations for LambdaVariable
  • ListView support in remove_list_null_values and HigherOrderUDF::clean_null_values
  • Optional ScalarUDFImpl methods not present on HigherOrderUDF(some are unlikely to be used and could be added on demand only):
    • simplify
    • with_updated_config
    • preimage
    • placement
    • evaluate_bounds
    • propagate_constraints
    • output_ordering
    • preserves_lex_ordering

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