Ignore node_modules files under packages.

Cover scenarios primarily for adjusted behavior on Button, as well as ensure components are exported correctly.

Put `index.ts` back to `lib` for a simpler npmignore.

Remove file from tarball.

Add .docz to npmignore.

Export declaration files from TypeScript.

Migrate from GitHub, rewrite common components to TypeScript (main and test files). Also replaced Storybook to Docz.