Pratik

Update:
- progress_bar() : When n == 0 -> NaN%

Update:
- Menu.select() : Bug correction

Add
- clear function.

Update
- Menu() : Added a colored parameter.
- Menu.select() : Added a printed parameter.
- Menu.select() : Return None if menu is empty.
- Menu.select() : Ask if the choice is out of selection and no longer returns error.
- README.md : As a result of the modifications

Update
- README.md (Grammar adjustments by [joviprata Jovi Prata](https://github.com/joviprata).)

Remove
- pyproject.toml (Files for update PyPi are not relevant on GitHub.)

Add
- Time Remaining class
- Time Remaining exemples

Remove
- Waiting class

Add
- GCD function
- Progress Bar function
- exemples

Update
- get_path function