python: do not override root logger

[isabelizimm]

By adding a handler for "", we were effectively pushing all logs to a file, including the user's. I've removed the root logger and instead added a few other handlers to capture logs.

This change does expose us to a much higher likelihood of our logs leaking into the console.

Eg, the added handlers were after observing positron._vendor.pygls.protocol.json_rpc will send out logs if you run something like import xyzabc, and the Comm logs were leaking if there is an error in the comms.

Related issue in Jupyter, where they needed to handle tornado logs jupyter/notebook#1397

Release Notes

New Features

• N/A

Bug Fixes

• User logs are not sent to the console #4182 Python users' logs are now sent to console.

QA Notes

import logging
logging.warning("should show")

it's worth it to try to force a few other errors, to make sure we don't need to add other handlers.

[github-actions]

E2E Tests 🚀
This PR will run tests tagged with: @:critical

^{readme  valid tags}

[isabelizimm]

going to make this a setting, as discussed 👾

[seeM]

@isabelizimm we could also try merging this change as is and try to catch any leaked loggers as they pop up especially given we're still in beta.