[FEAT] Add option to have less totalSlides than slidesToShow

[SHinterauer]

The default behavior in case of less total slides than the number of slidesToShow in the config is, to set the slidesToShow to the total slides in the slider. This is implemented in the fixSliderConfig.ts file, line 13 to 20.
In some cases this behavior can lead to a problem, where the slides blow up in size dramatically. Therefore it would be nice to have an option to turn if off, so the slides keep there size even if there are less total slides than the slidesToShow number.

Possible config:
this.sliderConfig = {
all: {
slidesToShow: 3,
//with this parameter you could turn off the slidesToShow reset
keepInitalSlidesToShow: true
}
}

[jayswo]

Would need this as well! 🚀🚨
Please fix this :)