Add Jito support

[0xh3rman]

Fixes #908

Changes:

1. Estimate Jito tip floor based on priority fee
2. Update gas-bench to test the algorithm

  ┌────────┬──────────────────┬────────────────┬─────────────────────────┐
  │ Level  │   Our Estimate   │   Jito Floor   │          Diff           │
  ├────────┼──────────────────┼────────────────┼─────────────────────────┤
  │ Slow   │ ~1,538 lamports  │ ~1,000         │ +53% (safe margin)      │
  ├────────┼──────────────────┼────────────────┼─────────────────────────┤
  │ Normal │ ~4,614 lamports  │ ~4,000-4,500   │ +3-17% (close!)         │
  ├────────┼──────────────────┼────────────────┼─────────────────────────┤
  │ Fast   │ ~15,381 lamports │ ~14,000-20,000 │ -23% to +10% (in range) │
  └────────┴──────────────────┴────────────────┴─────────────────────────┘

[semanticdiff-com]

Review changes with  

Changed Files

File	Status
gemstone/src/models/gateway.rs	84% smaller
crates/primitives/src/gas_price_type.rs	61% smaller
crates/gem_solana/src/provider/preload_mapper.rs	35% smaller
bin/gas-bench/src/main.rs	8% smaller
Cargo.lock	Unsupported file format
bin/gas-bench/Cargo.toml	Unsupported file format
bin/gas-bench/src/helius/client.rs	0% smaller
bin/gas-bench/src/helius/mod.rs	0% smaller
bin/gas-bench/src/helius/model.rs	0% smaller
bin/gas-bench/src/jito/client.rs	0% smaller
bin/gas-bench/src/jito/mod.rs	0% smaller
bin/gas-bench/src/jito/model.rs	0% smaller
bin/gas-bench/src/solana_client.rs	0% smaller
crates/gem_solana/Cargo.toml	Unsupported file format
crates/gem_solana/src/models/jito.rs	0% smaller
crates/gem_solana/src/models/mod.rs	0% smaller
gemstone/src/lib.rs	0% smaller
gemstone/src/models/transaction.rs	0% smaller
gemstone/src/solana/mod.rs	0% smaller

[gemini-code-assist]

Summary of Changes

Hello @0xh3rman, 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 expands the gas-bench tool's capabilities by adding support for Solana blockchain fee benchmarking, specifically integrating Jito tip estimation. It allows users to compare estimated Jito tips with actual Jito tip floors, providing valuable insights into transaction prioritization on Solana. Furthermore, the changes ensure that Jito tip information is seamlessly incorporated into Solana transaction metadata, enhancing the overall utility and data richness for Solana transactions within the system.

Highlights

• Jito Support Integration: Introduced comprehensive support for Jito within the gas-bench tool and the gem_solana crate, enabling estimation of Jito tip floors based on priority fees.
• Gas Benchmarking Tool Enhancement: The gas-bench CLI tool has been updated to support benchmarking for both Ethereum and Solana, with Solana-specific features including Jito tip estimation and comparison against Jito's official tip floor API.
• Solana Transaction Metadata Update: Solana transaction metadata now includes estimated Jito tips (slow, normal, fast) derived from recent prioritization fees, making this information accessible for transaction processing.
• New Jito-related Modules: Added new modules (jito and solana_client) to bin/gas-bench/src for Jito API interaction, fee statistics calculation, and Solana-specific gas client implementation. Also added a jito module to crates/gem_solana/src/models for core Jito logic.

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[gemini-code-assist]

Code Review

This pull request adds Jito support to the gas benchmarking tool, including fetching Jito tip floors and estimating tips based on Solana priority fees. The changes are well-structured, introducing new modules for Jito and Solana clients. I've provided some suggestions to improve code robustness, maintainability, and error handling. Key areas for improvement include making error handling more explicit to avoid silent failures, improving module cohesion by relocating some constants, and refactoring a loop to be less dependent on array indexing.