build: specify the package files

[andrii-bodnar]

Currently, the npm package contains a lot of excessive files.

The only needed files there are the dist folder, LICENSE, and README.md files.

[jefflee-figma]

Thanks! Could you also add CHANGELOG.md and CONTRIBUTING.md, and make sure the list is sorted alphabetically?

[andrii-bodnar]

@jefflee-figma thanks for the review. Done ✅

[jefflee-figma]

Thanks for the revision. To clarify, I was hoping to include CHANGELOG.md and CONTRIBUTING.md to the files list. Everything else LGTM.

[andrii-bodnar]

@jefflee-figma thank you, done.

[jefflee-figma]

Thank you!