Add Progress and ProgressBar components

[dricair]

In line with https://getbootstrap.com/docs/4.0/components/progress/

[isosphere]

Thanks for another contribution!

While I agree with error checking, I don't love being a library that panic!s when bounds are exceeded. This could conceivably happen if the value is bound and modified to be out of bounds. I think I'd rather we clamp the value to be max if it's above max and ditto for min and complain with a console error somewhere. The entire Yew application we provide components for shouldn't crash for this kind of violation.

[dricair]

Ok I think you're right. I tried to not change the values as much as possible except to avoid the div to panic.
Note that warn does not print anything, I think we should replace by gloo::console instead to display on the browser console.

[isosphere]

I think we should replace by gloo::console instead to display on the browser console.

I agree! That's a pretty common dependency, I think it's reasonable for us to depend on it so we can provide better debugging info.

[dricair]

I added a commit to change log::warn to gloo_console::warn.
It is almost directly compatible except that later do not do format! itself.

[isosphere]

Thanks for the adjustment; merged with main as 0.9.0.

I feel the bump in minor version coveys the new feature supported better.