Print message on 0th rank (print0)

[coquelin77]

Feature functionality
Print a message on the 0th rank. This can be used to reduce the amount of print statements in debuging or for verbose options for more complex function

example:

def print0(*args, **kwargs):
    if ht.rank == 0:
        print(*args, **kwargs)

[mtar]

@coquelin77 Is this issue resolved by #816?

[ClaudiaComito]

Yes I think this has been resolved by #816. Closing.