feat: add separate Bytes API in std/math/uints package for handling bytes (U8) directly

[ivokub]

Description

Previously the operations were define over U32 and U64 (as needed or hash functions). But for working directly with bytes didn't allow using boolean operations directly on bytes etc.

Additionally, made the uints API cacheable.

It also resolved #911.

Needed for #1489 refactoring what I'm working on.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)

How has this been tested?

• TestKeyStore for testing caching

Checklist:

• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• I did not modify files generated from templates
• golangci-lint does not output errors locally
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

[Copilot]

Pull Request Overview

This PR introduces a dedicated Bytes API within the std/math/uints package for direct byte (U8) operations, refactors the existing BinaryField implementation to use the new Bytes helper, and makes the uints constructors cacheable. It also enhances the range checker to handle zero- and one-bit variables directly.

• Add Bytes type and NewBytes constructor for byte-level operations with caching in std/math/uints/bytes.go
• Refactor std/math/uints/uint8.go to use the new Bytes API, update BinaryField, and deprecate direct rangechecker usage
• Update range checker (std/rangecheck/rangecheck_commit.go) to store the API and handle 0- and 1-bit cases
• Register uints hints and update hash tests to use NewBytes and AssertIsEqual

Reviewed Changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
std/rangecheck/rangecheck_commit.go	Cache frontend.API in commitChecker and add direct handling for 0/1-bit checks
std/math/uints/bytes.go	New Bytes type, NewBytes constructor with caching, bitwise ops, and assertion methods
std/math/uints/uint8.go	Refactor U8/U32/U64 and BinaryField to use Bytes, remove inline precomputes
std/hints.go	Register hints for the new uints package and additional curve modules
std/hash/sha3/sha3_test.go	Switch from uints.New[...] to uints.NewBytes and use AssertIsEqual
std/hash/sha2/sha2_test.go	Update constructors and assertions to use the Bytes API
std/hash/ripemd160/ripemd160_test.go	Migrate to NewBytes and unified equality assertion
internal/kvstore/kvstore_test.go	Adds tests for generic key/value store behavior

Comments suppressed due to low confidence (2)

std/math/uints/uint8.go:334

• You cannot iterate over an int with range bf.lenBts(). Either use a traditional for-loop (for j := 0; j < bf.lenBts(); j++) or iterate over ret with for j := range ret.

		for j := range bf.lenBts() {

std/hints.go:50

• The std/math/uints package does not define a GetHints function. You should either implement GetHints() in that package or remove this registration.

	solver.RegisterHint(uints.GetHints()...)