feat: add consensus types

[wemeetagain]

• Resolve Redefine state transition type in this repo #35
• Add latest main branch of ssz-z as a dependency (zbuild fetch --save=ssz git+https://github.com/chainsafe/ssz-z)
• Copy src/consensus_types from fix: state transition ssz-z#23
• Add a build_options options_module which defined the preset via build system (override with -Dpreset=XXX)
• Add consensus_types as a module with the proper imports (sanity tested with zbuild test consensus_types)
• Remove darwin-x64 from CI and opened this issue to track Support for darwin x64 #41

For testing purposes, the ssz-z repo can still be linked as a "path" dependency by replacing zbuild.zon .dependencies.ssz.url with eg: .path = "../ssz-z",

[gemini-code-assist]

Summary of Changes

Hello @wemeetagain, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request significantly enhances the project's capability to interact with the Ethereum consensus layer by introducing a complete set of consensus-related data structures. It integrates the ssz-z library for efficient serialization and deserialization, and meticulously configures the build system to support these new types, including the ability to switch between different network presets. This foundational work is crucial for developing or interacting with Ethereum's beacon chain and its various hard fork specifications.

Highlights

• New Dependency Integration: The project now integrates the ssz-z library, a crucial dependency for handling Simple Serialize (SSZ) encoding and decoding of data structures, which is fundamental to Ethereum's consensus layer.
• Comprehensive Ethereum Consensus Types: A new consensus_types module has been introduced, encapsulating a comprehensive set of Ethereum consensus-related data structures. This module includes types spanning from the initial Phase0 specification through Altair, Bellatrix, Capella, Deneb, and the upcoming Electra upgrades.
• Enhanced Build System Configuration: The build system (build.zig and zbuild.zon) has been updated to recognize and properly compile the new consensus_types module. This includes defining a preset build option (e.g., "mainnet" or "minimal") that influences the constants used within the consensus types, allowing for flexible network configuration.
• New Test Coverage: Dedicated test targets have been added for the consensus_types module, ensuring that the newly integrated data structures and their associated logic can be thoroughly validated within the build environment.

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[gemini-code-assist]

Code Review

This pull request introduces a comprehensive set of consensus type definitions for various Ethereum hard forks, from Phase0 to Electra. The changes are well-structured, with each fork's types defined in its own file and building upon the previous ones. The build system is correctly updated to incorporate these new types as a distinct module, including build options for presets and corresponding tests. My review focuses on improving code robustness by replacing potentially imprecise floating-point calculations with integer-based alternatives, and on enhancing maintainability by reducing code duplication through re-exporting unchanged types across forks.

[github-actions]

Performance Report

✔️ no performance regression detected

Full benchmark results

Benchmark suite	Current: 3337495	Previous: null	Ratio
JS - computeSyncCommitteeIndices - 16384 indices	328.26 ms/op
Zig - computeSyncCommitteeIndices - 16384 indices	4.0088 ms/op
JS - computeSyncCommitteeIndices - 250000 indices	316.18 ms/op
Zig - computeSyncCommitteeIndices - 250000 indices	16.924 ms/op
JS - computeSyncCommitteeIndices - 1000000 indices	339.14 ms/op
Zig - computeSyncCommitteeIndices - 1000000 indices	31.154 ms/op
get values - 1000	345.00 ns/op
get values - naive - 1000	492.00 ns/op
set values - 1000	316.00 ns/op
set values - naive - 1000	616.00 ns/op
get values - 1000000	848.00 ns/op
get values - naive - 1000000	1.5960 us/op
set values - 1000000	886.00 ns/op
set values - naive - 1000000	2.0950 us/op
JS - unshuffleList - 16384 indices	940.43 us/op
Zig - unshuffleList - 16384 indices	600.03 us/op
JS - unshuffleList - 250000 indices	13.595 ms/op
Zig - unshuffleList - 250000 indices	9.4705 ms/op
JS - unshuffleList - 1000000 indices	53.108 ms/op
Zig - unshuffleList - 1000000 indices	37.892 ms/op

by benchmarkbot/action