Initialize Rust project with Cargo, dependencies, and module skeleton

Set up single-binary reverse-proxy project with all core dependencies
(axum, tokio, hyper, tower, rustls, tokio-rustls, rustls-acme, serde,
toml, arc-swap, tracing, tracing-subscriber, rustls-pemfile,
rustls-pki-types, clap, signal-hook, anyhow, thiserror) pinned to exact
versions. Create module skeleton (config, proxy, tls, rate_limit,
logging, admin, health, shutdown) matching architecture spec.

Cargo.toml

@@ -0,0 +1,29 @@
+[package]
+name = "reverse-proxy"
+version = "0.1.0"
+edition = "2021"
+license = "MIT OR Apache-2.0"
+
+[[bin]]
+name = "reverse-proxy"
+path = "src/main.rs"
+
+[dependencies]
+axum = "=0.8.9"
+tokio = { version = "=1.45.1", features = ["full"] }
+hyper = "=1.6.0"
+tower = "=0.5.2"
+rustls = { version = "=0.23.28", features = ["aws_lc_rs"] }
+tokio-rustls = "=0.26.2"
+rustls-acme = { version = "=0.12.1", features = ["aws-lc-rs"] }
+serde = { version = "=1.0.228", features = ["derive"] }
+toml = "=0.8.23"
+arc-swap = "=1.7.1"
+tracing = "=0.1.41"
+tracing-subscriber = "=0.3.19"
+rustls-pemfile = "=2.2.0"
+rustls-pki-types = "=1.12.0"
+clap = { version = "=4.6.1", features = ["derive"] }
+signal-hook = "=0.3.18"
+anyhow = "=1.0.102"
+thiserror = "=2.0.18"