refactor: Create utility file for encoding #15443

Job	Run time
Build	49m 11s
Build with Clang	0s
Spark Aggregate Fuzzer	15m 42s
Spark Fuzzer	16m 2s
Presto Bias Fuzzer	1h 23m 54s
Cache Fuzzer	15m 51s
Exchange Fuzzer	11m 8s
Presto Fuzzer	0s
Join Fuzzer	17m 41s
RowNumber Fuzzer	15m 34s
Biased Aggregation Fuzzer with Presto as source of truth	0s
Spark Bias Fuzzer	0s
Aggregation Fuzzer with Presto as source of truth	19m 18s
Biased Expression Fuzzer with Only Added/Updated Functions and Presto as source of truth	4m 53s
Window Fuzzer with Presto as source of truth	17m 45s
Writer Fuzzer with Presto as source of truth	17m 34s
Signature Changes	5s
	4h 44m 38s

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