Initial npmctl: NPM CLI + generic API client

Rust CLI for Nginx Proxy Manager via its API, with sudo-like token auth
(login prompts for password, caches only a short-lived token, never the
password) and a generic `api` command to talk to any HTTP API.

Commands: login/logout/status, list-hosts/get-host/find, add-proxy,
enable/disable/delete-host, list-certs/add-cert/renew-cert, dump (JSON
backup), apply (declarative), and generic api (method/url/header/data/
auth-key/insecure).

Includes clap help + help-on-bad-input, Gitea Actions release workflow
(arm64 native + x64 cross), VS Code build task (-> ./build), README and
MIT license.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011YPrEZVBpPVoCRyJz2exkZ

Cargo.toml

@@ -0,0 +1,29 @@
+[package]
+name = "npmctl"
+version = "0.1.0"
+edition = "2021"
+description = "CLI för Nginx Proxy Manager (NPM) med en generisk API-klient för framtidssäkring"
+authors = ["brasse"]
+license = "MIT"
+repository = "https://gitea.brasse-pc.eu/brasse/Npm-cli"
+
+[[bin]]
+name = "npmctl"
+path = "src/main.rs"
+
+[dependencies]
+clap = { version = "4.5", features = ["derive", "env"] }
+reqwest = { version = "0.12", default-features = false, features = ["blocking", "json", "rustls-tls"] }
+serde = { version = "1", features = ["derive"] }
+serde_json = "1"
+rpassword = "7"
+dirs = "5"
+anyhow = "1"
+chrono = { version = "0.4", default-features = false, features = ["clock", "std"] }
+
+[profile.release]
+strip = true
+opt-level = "z"
+lto = true
+codegen-units = 1
+panic = "abort"