feat(rust/zvec): add Rust SDK

[sunhailin-Leo]

This pull request introduces a new Rust SDK for the zvec vector database, including a safe, idiomatic Rust API, FFI bindings, benchmarking, and CI integration. The changes add a Cargo workspace with two crates (zvec and zvec-sys), comprehensive documentation, coverage scripts, and GitHub Actions workflows for building and testing the Rust SDK on multiple platforms.

Rust SDK Structure and Documentation:

• Added a new Rust SDK as a Cargo workspace with two crates: zvec-sys (FFI bindings to the zvec C-API) and zvec (safe, high-level Rust wrapper). Includes Cargo.toml files for both crates and workspace configuration. [1] [2] [3]
• Added a detailed README.md for the Rust SDK, covering architecture, build/test instructions, API usage, supported types, and index types.

Testing, Benchmarking, and Coverage:

• Added a benchmarking suite in zvec/benches/zvec_bench.rs using Criterion.rs, covering document creation, field access, insert, query, schema creation, and type conversions.
• Added a code coverage script scripts/coverage.sh using cargo-llvm-cov, supporting HTML, LCOV, text, and JSON reports.

CI/CD Integration:

• Updated the main CI workflow (.github/workflows/01-ci-pipeline.yml) to add jobs for building and testing the Rust SDK on macOS ARM64 and Linux x64.
• Added a reusable GitHub Actions workflow (.github/workflows/06-rust-build.yml) for building, linting, testing, and benchmarking the Rust SDK, including C library build steps and environment setup.

[greptile-apps]

Your free trial has ended. If you'd like to continue receiving code reviews, you can add a payment method here.