Add Python script for generating sample APFv6 mDNS offload program am: df0b7f09a9 am: 644e8c21db

Original change: https://android-review.googlesource.com/c/platform/hardware/google/apf/+/3380873

Change-Id: Ia82463a65d0c5d56c2ca95fceea79345f2eca3c6
Signed-off-by: Automerger Merge Worker <[email protected]>