Add rust_video: Rust keyframe extraction Python module

Introduce the rust_video package, a Rust-based ultra-fast video keyframe extraction tool with SIMD and parallel optimizations. Includes Cargo.toml and pyproject.toml for Rust and Python packaging, Python type hints (rust_video.pyi), and the main Rust library (lib.rs) with PyO3 bindings, performance benchmarking, and system info utilities.

rust_video/Cargo.toml

@@ -0,0 +1,31 @@
+[package]
+name = "rust_video"
+version = "0.1.0"
+edition = "2021"
+authors = ["VideoAnalysis Team"]
+description = "Ultra-fast video keyframe extraction tool in Rust"
+license = "MIT"
+
+[dependencies]
+anyhow = "1.0"
+clap = { version = "4.0", features = ["derive"] }
+rayon = "1.11"
+
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+
+chrono = { version = "0.4", features = ["serde"] }
+
+# PyO3 dependencies
+pyo3 = { version = "0.22", features = ["extension-module"] }
+
+[lib]
+name = "rust_video"
+crate-type = ["cdylib"]
+
+[profile.release]
+opt-level = 3
+lto = true
+codegen-units = 1
+panic = "abort"
+strip = true