Add callback prop for tab

[suffle]

This PR adds a callback prop that is called, when the tab key is pressed. This allows developers to add their own autocomplete feature

[Sebobo]

Very cool, will test it :)

It prevents the default tabbing in the browser correct?

[suffle]

Very cool, will test it :)

It prevents the default tabbing in the browser correct?

That is correct, although I am open about the api. We could also call the callback with the event as its argument, then it is up to the developer to choose the behavior completely. I opted for the slightly simpler API here.

[linuswillner]

Hi, thanks for the PR! Unfortunately, I'm in a bit of a personal conundrum right now, so it will probably take me a little while to get to review this one. Don't want to give any firm timelines right now, but I promise I'll get to it eventually! Thanks for understanding 😄

[Sebobo]

Applied it as patch and works perfectly when following the provided example 👍

Now thinking about how to provide a feedback if there are more matches or when trying to complete more than the command name.