Add very basic CLI.

Cargo.toml

@@ -6,6 +6,7 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-clap = "4.4.6"
+# TODO: maybe error-context, suggestions, usage | env
+clap = { version = "4.4.6", default-features = false, features = ["std", "color", "help", "derive"] }
 organic = "0.1.12"
 tokio = { version = "1.30.0", default-features = false, features = ["rt", "rt-multi-thread"] }