ISBAT Carousel transitipn duration

### Is your feature request related to a problem? Please describe.

Please add a transition duration setting.

I can achieve it with additional CSS, but I’m trying to keep my add’l CSS to a minimum if only for the next person.

### Describe the solution you'd like

Want to be able to set my own transiton duration on Carousel block

### Describe alternatives you've considered

Here’s my Add’l for a transition duration, just to clarify what I’m referencing:
#swiper-wrapper{
transition-timing-function:ease-in-out !important;
transition-duration:.8s !important;
}

### Additional context/screenshots

Originally submitted at WordPress.org:
https://wordpress.org/support/topic/feature-request-for-carousel/