Improve logging everywhere

[LeoBaro]

Check all the log messages and their level

[AndreP-git]

I suggest this as the higher priority feature to improve. If you have some specific ideas to refactor the whole logging system we can discuss asap. We can take some ideas from: Python best practice in terms of logging

[lbabetto]

In the Data Lake TUI I also follow what they suggest, putting a logger = logging.getLogger(__name__) at the top of each module unit, then adding something like this in the main executable:

logger = logging.getLogger()
logger.setLevel(logging.DEBUG)
fh = logging.FileHandler("dl-tui.log", mode="w")
fh.setLevel(logging.DEBUG)
formatter = logging.Formatter("%(asctime)s - %(name)s - %(levelname)s - %(message)s")
fh.setFormatter(formatter)
logger.addHandler(fh)

Works pretty well in that scenario, makes it clear what is logged by the library and what is logged by external stuff.