feat: add a simple cron task

cron.py

@@ -0,0 +1,25 @@
+"""
+starts a one-off process
+"""
+import signal
+import time
+
+from shared import consume_cpu, consume_memory, handle_signal, is_exiting
+
+
+def main():
+    """
+    starts a no-op task that consumes resources
+    """
+    print("consuming cpu")
+    consume_cpu()
+    print("consuming memory")
+    consume_memory()
+    print("sleeping for 10 seconds")
+    time.sleep(10)
+
+
+if __name__ == "__main__":
+    signal.signal(signal.SIGTERM, handle_signal)
+
+    main()