feat: clean the NPM package to make its footprint smaller

[KeesCBakker]

Is your feature request related to a problem? Please describe. When I look at the code in the package, I see it ships way more than we actually need to run the package:

Describe the solution you'd like Let's use a .npmignore to exclude the following things:

• .github
• .husky
• script
• test
• .editorconfig
• .eslintrc.js
• .release-it.json
• CODE_OF_CONDUCT.md

Describe alternatives you've considered N/A

Additional context I can make a PR for this.