[BugFix] - LoggingService changing default logging configuration

[montezdesousa]

Description

• Fixes [Bug] OpenBB Platform hijacks default logger #6680
• The LoggingService and HandlersManager classes were changing the default logger configurations. Now a custom logger is created and used for this purpose, without changing the default configuration.

How has this been tested?

• Checked logs are correct in the logs folder
• Checked stdout logs are correct

import logging
logging.basicConfig(level=logging.INFO)
logging.info("This message is shown")
import openbb
logging.info("This message is hidden") # This message should NOT be hidden anymore

[deeleeramone]

Works as advertised.