Add @wessberg/rollup-plugin-ts

[cprecioso]

Awesome Contribution Checklist:

• [x] I have read, and re-read the Contributing Guidelines
• [x] I have searched to ensure the suggested item doesn't exist on this list
• [x] This PR contains only one item

Please Provide a Link A Repository for Your Addition

https://github.com/wessberg/rollup-plugin-ts

Please Describe Your Addition

This plugin is, in my opinion, the best for using TypeScript with rollup, as it gives the option to transpile it using Babel, while complying with Browserslist (both these things are optional), as well as also bundling the type files.

[shellscape]

I'm surprised this wasn't already in the list. Thanks for suggesting it. I'm also going to have one of our plugin maintainers reach out to the owner of that plugin to talk about improving the official one.