Use browser modules loading in bs_slider_swiper

Problem/Motivation

Swiper is great and implementation works nicely. The only problem is that Swiper is quite heavy, fully loaded it is 144kb.

From version 10, Swiper supports browser module loading. Browsers supports for browser module loading is quite good now (Can I use reports 96.94%) so we can start using this feature. Instead of loading all of Swiper JS we should split modules into libraries and load only what is enabled in current Swiper configuration.