chore: checkpoint before Python removal

vendor/clap/examples/tutorial_derive/02_crate.rs

@@ -0,0 +1,17 @@
+use clap::Parser;
+
+#[derive(Parser)]
+#[command(version, about, long_about = None)] // Read from `Cargo.toml`
+struct Cli {
+    #[arg(long)]
+    two: String,
+    #[arg(long)]
+    one: String,
+}
+
+fn main() {
+    let cli = Cli::parse();
+
+    println!("two: {:?}", cli.two);
+    println!("one: {:?}", cli.one);
+}