[Idea/v9] Optional core-js polyfill and change javascript utility from lodash to just

[dolphin-wood]

Discussed in https://github.com/idiotWu/smooth-scrollbar/discussions/406

^{Originally posted by sadeghbarati November 1, 2021} https://bundlephobia.com/package/[email protected]

optional core-js for the next release will be the best option because ppl may already have core-js polyfills on their project (duplicate polyfills code) or even don't wanted to polyfill older browsers

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optional: use just utility instead of lodash

https://github.com/angus-c/just https://github.com/puruvj/all-of-just lodash vs just: https://github.com/angus-c/just/issues/4