ADD: copyright mark for sharing the yakerizer more freely

Author: 9and3

invokes/yakerize.py

@@ -1,5 +1,11 @@
 #! python3
 
+```
+Yakerize.py was originally developed as part of the DiffCheck plugin by 
+Andrea Settimi, Damien Gilliard, Eleni Skevaki, Marirena Kladeftira (IBOIS, CRCL, EPFL) in 2024. 
+It is distributed under the MIT License, provided this attribution is retained.
+```
+
 import os
 import sys
 import argparse