feat(cli): implement wraith connect subcommand with clap derive

All CLI flags from client.md: --server, --peer, --transport (default tcp),
--identity, --socks5 (default 127.0.0.1:1080), --forward (repeatable),
--remote-forward (repeatable), --proxy, --iroh-relay, --tls-server-name,
--insecure. Env var defaults: WRAITH_SERVER, WRAITH_IDENTITY. Validates
--server required for tcp/tls, --peer required for iroh, --identity required.
Warns on --proxy with --transport tcp (ADR-019). Translates args to
ConnectOptions and calls ClientSession::new(opts).run().await. Errors to
stderr with non-zero exit.

crates/wraith/Cargo.toml

@@ -7,8 +7,15 @@ edition = "2021"
 name = "wraith"
 path = "src/main.rs"
 
+[features]
+default = ["tls", "iroh"]
+tls = ["wraith-core/tls"]
+iroh = ["wraith-core/iroh", "dep:iroh", "dep:url"]
+
 [dependencies]
 wraith-core = { path = "../wraith-core" }
-clap = { version = "4", features = ["derive"] }
+clap = { version = "4", features = ["derive", "env"] }
 tokio = { version = "1", features = ["full"] }
-anyhow = "1"
+anyhow = "1"
+iroh = { version = "0.34", optional = true }
+url = { version = "2", optional = true }