chore: checkpoint before Python removal

vendor/indicatif/examples/single.rs

@@ -0,0 +1,13 @@
+use std::thread;
+use std::time::Duration;
+
+use indicatif::ProgressBar;
+
+fn main() {
+    let pb = ProgressBar::new(1024);
+    for _ in 0..1024 {
+        thread::sleep(Duration::from_millis(5));
+        pb.inc(1);
+    }
+    pb.finish_with_message("done");
+}