Indicate progress during optimization

[aron-bram]

Problem description:
Building an AutoML model and calling the fit() function does not give any indication of how much time is left from the optimization process. This may cause confusion especially for fresh users not familiar with the API.

Solution idea:
It would be great to have some sort of signal in the console showing the current progress of the search.
Possibly by adding tqdm as a dependency and utilizing it to display a progress bar.
This feature could be turned on by a boolean parameter.

Importance:
This is a minor feature, which could potentially improve the usability of the API without breaking it or requiring too many dependencies.

[mrektor]

I agree that this would be very useful