Port liquidity information sharing strategies to new API

[renepickhardt]

In the original notebook there was code to investigate what happens if we globally share information about liquidity and in comparison what happens if we only share such information in our friend of a friend network. While I copied the code to the lib I think function will currently not work and breaks as the code needs to be refactored to the current code base. The relevant line of code with the API call is at:

pickhardtpayments/pickhardtpayments/UncertaintyNetwork.py

Line 80 in 1adb06d

def activate_foaf_uncertainty_reduction(self, src, dest):

This is relevant for BOLT 14 ideas