Integrate Online Acoustic Monitoring script for ORCA site

@tgal @enzenhoefer Online_Acoustic_Monitoring.py

I am attaching the tool for online monitoring of the acoustic signal received from piezos and hydrophones.

Find a brief description here:

https://elog.km3net.de/Calibration/186

The tool saves an image every 10 minutes in a folder that must be specified in line 223.

For now it is not yet generalized for any number of strings. It works for 5 strings. In the future I will make sure that it does not have to be changed every time new DUs are added.

The script is not adequately commented. In the coming days I will comment on it in detail. If you have any questions do not hesitate to contact me.

Thanks,

Carlo