[Feature Request] Support time elapsed as suffix string

[fabriziocucci]

It would be great if the library could optionally show the time elapsed while the spinner is on, something like:

⠋ My very long operation (1m 42s)

I'd be happy to contribute this if you think it could be generally useful.

[sindresorhus]

I think it's a bit too niche and there are also many other things that could be useful as a suffix. For example, the remaining time of an operation, percentage, etc.

I think a better way to solve this is to introduce a suffixText option similar to prefixText.

[fabriziocucci]

That would be great! :)