feat: Add classification functions #15208

Job	Run time
Build	48m 51s
Build with Clang	0s
Spark Aggregate Fuzzer	16m 6s
Spark Fuzzer	15m 51s
Presto Fuzzer	15m 48s
Presto Bias Fuzzer	0s
Exchange Fuzzer	16m 13s
Biased Aggregation Fuzzer with Presto as source of truth	20m 50s
Aggregation Fuzzer with Presto as source of truth	18m 34s
Join Fuzzer	17m 27s
Window Fuzzer with Presto as source of truth	17m 39s
RowNumber Fuzzer	15m 35s
Signature Changes	2s
Spark Bias Fuzzer	0s
Biased Expression Fuzzer with Only Added/Updated Functions and Presto as source of truth	0s
Writer Fuzzer with Presto as source of truth	17m 35s
	3h 40m 31s

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