Make tqdm optional if manager is used as a python module.

[rasjani]

If people use webdrivermanager as a python module, it would be nicer to let them decide if tqdm output can be disable in order to not mess up their console output.

Update: apparently i just didnt read the code carefully enough - it is a possibility already but there's a hard requirement for tqdm still present which is not nice from my perspective - might consider this to be pip install time extra feature ..