feat: Add Spark concat_ws function #14685

Job	Run time
Build	50m 13s
Build with Clang	0s
Spark Aggregate Fuzzer	16m 6s
Presto Fuzzer	30m 49s
Presto Bias Fuzzer	0s
Biased Aggregation Fuzzer with Presto as source of truth	0s
Exchange Fuzzer	16m 10s
Aggregation Fuzzer with Presto as source of truth	17m 36s
Join Fuzzer	17m 32s
Biased Expression Fuzzer with Only Added/Updated Functions and Presto as source of truth	0s
Window Fuzzer with Presto as source of truth	17m 33s
Writer Fuzzer with Presto as source of truth	17m 33s
RowNumber Fuzzer	15m 37s
Spark Fuzzer	16m 5s
Signature Changes	2s
Spark Bias Fuzzer	0s
	3h 35m 16s

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