Add conformance checking example

util/prompt.py

@@ -0,0 +1,17 @@
+import sys
+
+def yes_no(msg: str):
+   sys.stdout.write(f"{msg} <Y/n>")
+
+   choice = input()
+   if choice in {'Y','y',''}:
+      return True
+   elif choice in {'N','n'}:
+      return False
+   else:
+      print("Please respond with 'y' or 'n'")
+      return yes_no(msg)
+
+def pause():
+   print("press any key...")
+   input()