chore: utils folder

[twoeths]

Motivation

• All committee_indices, pubkey_index_map and shuffle are utils and we need to move all of them to utils folder to make the code structure cleaner

[github-actions]

Performance Report

✔️ no performance regression detected

Full benchmark results

Benchmark suite	Current: 7047168	Previous: null	Ratio
JS - unshuffleList - 16384 indices	916.24 us/op
Zig - unshuffleList - 16384 indices	601.11 us/op
JS - unshuffleList - 250000 indices	13.391 ms/op
Zig - unshuffleList - 250000 indices	9.0056 ms/op
JS - unshuffleList - 1000000 indices	52.248 ms/op
Zig - unshuffleList - 1000000 indices	35.546 ms/op
JS - computeSyncCommitteeIndices - 16384 indices	333.61 ms/op
Zig - computeSyncCommitteeIndices - 16384 indices	3.9987 ms/op
JS - computeSyncCommitteeIndices - 250000 indices	312.36 ms/op
Zig - computeSyncCommitteeIndices - 250000 indices	16.933 ms/op
JS - computeSyncCommitteeIndices - 1000000 indices	322.85 ms/op
Zig - computeSyncCommitteeIndices - 1000000 indices	31.295 ms/op
get values - 1000	294.00 ns/op
get values - naive - 1000	504.00 ns/op
set values - 1000	365.00 ns/op
set values - naive - 1000	601.00 ns/op
get values - 1000000	836.00 ns/op
get values - naive - 1000000	1.4610 us/op
set values - 1000000	848.00 ns/op
set values - naive - 1000000	2.0310 us/op

by benchmarkbot/action