chore: checkpoint before Python removal

vendor/iana-time-zone/examples/get_timezone_loop.rs

@@ -0,0 +1,13 @@
+use std::thread;
+use std::time::Duration;
+
+use iana_time_zone::{get_timezone, GetTimezoneError};
+
+const WAIT: Duration = Duration::from_secs(1);
+
+fn main() -> Result<(), GetTimezoneError> {
+    loop {
+        println!("{}", get_timezone()?);
+        thread::sleep(WAIT);
+    }
+}