perf(utils): slice calldata arrays in Yul without dynamic memory copies

[Agbasimere]

Summary

• Add CalldataSlicer, a Yul utility that extracts dynamically sized calldata arrays via calldataload (offset pointer + length word) and returns zero-copy slices.
• Slices can be passed straight into low-level verifier loops without allocating a dynamic memory buffer; bounds checks revert with SliceOutOfBounds.
• Covered by Hardhat tests for bytes / bytes32[] / address[] slices, nested ABI extraction, free-memory-pointer invariance, verifier pass-through, and array-bounds reverts.

Test plan

• cargo test (CI) — passed
• pnpm run build (CI) — passed
• hardhat test test/utils/CalldataSlicer.test.ts — 28 passing

Closes: #845

[mijinummi]

LGTM