Initialize Cargo workspace with wraith-core, wraith, and wraith-napi crates

- Workspace root Cargo.toml with three crate members
- wraith-core: library with feature flags (tls, iroh, acme), core deps (russh, tokio, tracing, anyhow, thiserror, tokio-util), module skeleton (transport, client, server, auth, socks5, error)
- wraith: binary crate depending on wraith-core with clap derive
- wraith-napi: cdylib crate depending on wraith-core, napi, napi-derive
- .gitignore for target/ and node_modules/

crates/wraith-core/Cargo.toml

@@ -0,0 +1,25 @@
+[package]
+name = "wraith-core"
+version = "0.1.0"
+edition = "2021"
+
+[lib]
+name = "wraith_core"
+
+[features]
+default = []
+tls = ["dep:tokio-rustls", "dep:rustls"]
+iroh = ["dep:iroh"]
+acme = ["dep:rustls-acme", "tls"]
+
+[dependencies]
+russh = "0.49"
+tokio = { version = "1", features = ["full"] }
+tracing = "0.1"
+anyhow = "1"
+thiserror = "2"
+tokio-util = { version = "0.7", features = ["compat"] }
+tokio-rustls = { version = "0.26", optional = true }
+rustls = { version = "0.23", optional = true }
+rustls-acme = { version = "0.12", optional = true }
+iroh = { version = "0.34", optional = true }