feat: add multi-engine regex flavour support

engines/rust/Cargo.toml

@@ -0,0 +1,23 @@
+[package]
+name = "regex-tools-rust-engine"
+version = "0.1.0"
+edition = "2024"
+rust-version = "1.97.1"
+license = "GPL-3.0-or-later"
+publish = false
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+regex = "=1.13.1"
+serde = { version = "=1.0.228", features = ["derive"] }
+serde_json = "=1.0.150"
+wasm-bindgen = "=0.2.126"
+
+[profile.release]
+codegen-units = 1
+lto = true
+opt-level = "z"
+panic = "abort"
+strip = "symbols"