Expose the state for autoplay and events to listen to it

[davidjerleke]

👉 Credit goes to @kdzone. Discussed in #308.

Feature request is related to

• embla-carousel-autoplay

Is your feature request related to an issue

^{Originally posted by kdzone April 30, 2022}
Playback can be stopped via stopOnMouseEnter and other internal events.
How to change the styles of my play button?

Describe the solution you'd like

^{Originally posted by kdzone April 30, 2022}

I suggest making a state for autoplay and an event to change it.

Specification:

emblaApi.on('autoplay:play', () => console.log('play'))
emblaApi.on('autoplay:stop', () => console.log('stop'))

emblaApi.plugins().autoplay.isPlaying() // --> boolean