chore: checkpoint before Python removal

vendor/hostname/examples/hostname.rs

@@ -0,0 +1,11 @@
+//! Naive re-implementation of the Linux `hostname` program.
+
+use std::io;
+
+fn main() -> io::Result<()> {
+    let name = hostname::get()?;
+
+    println!("{}", name.to_string_lossy());
+
+    Ok(())
+}