Add configurable slide threshold for smoother touch interactions

[romain-lgr]

Thanks for creating this plugin!

Issue Description
When using the slider functionality, users need to drag more than 50% of the slide's width to trigger a transition to the next slide. This creates significant friction in the user experience, especially on mobile devices where quick, short swipes are more natural.

Proposed Solution
It would be helpful to have a configurable threshold option that allows developers to customize how far users need to slide before triggering the transition.

Example configuration:

{
  threshold: 0.3 // Trigger slide after 30% movement
}