chore: checkpoint before Python removal

vendor/indicatif/examples/spinner-loop.rs

@@ -0,0 +1,18 @@
+use std::thread;
+use std::time::Duration;
+
+use indicatif::{ProgressBar, ProgressFinish};
+
+fn main() {
+    let mut spinner: Option<ProgressBar> = None;
+
+    for i in 0..3 {
+        let new_spinner = ProgressBar::new_spinner()
+            .with_message(format!("doing stuff {}", i))
+            .with_finish(ProgressFinish::AndLeave);
+        new_spinner.enable_steady_tick(Duration::from_millis(10));
+        thread::sleep(Duration::from_millis(500));
+        println!("\n\nreplace {}\n\n", i);
+        if let Some(t) = spinner.replace(new_spinner) { t.finish() }
+    }
+}