bullet by slide and breakpoints

[luger95]

Currently bullets are based solely on the number of slides. But if we use slide and breackpoints the bullet should take into consideration the two parameters.

Exemple :
`<vue-glide
type="slider"
:breakpoints="{
600: { perView: 1 },
},"
:rewind="false"
:gap="10"
:bullet="true"
:per-view="2"

`

With this example, logically, the number of bullet should be two, not three.