Added toolcool-range-slider library

[mzusin]

Hi, Added toolcool-range-slider - https://github.com/mzusin/toolcool-range-slider The project has 45 stars so far, 605 weekly downloads on npm, 82k hits/month on jsDelivr.

Checklist:

• [✔] I've read and understood Contributing Guidelines.
• [✔ ] I've added the new resource at the end of its section.
• [ ✔] This resource is out there for a while, and actively maintained.
• [✔ ] This resource is popular enough and has at least a few hundred stars on GitHub (45 stars, but it has more usage on jsDelivr/npm as described above).

npm - https://www.npmjs.com/package/toolcool-range-slider jsDelivr - https://www.jsdelivr.com/package/npm/toolcool-range-slider Usage - https://github.com/mzusin/toolcool-range-slider/network/dependents

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This project is a range slider library that is based on web components and can be used in any framework (React, Angular, etc.) or in vanilla JS. The library is written in TypeScript, doesn't have external dependencies, has a rich set of settings and options, and I hope it could be useful for the users.

Thank you!