Export `package.json`

### Feature Proposal

Exporting `package.json` is recommended by [`rollup-plugin-svelte`](https://github.com/sveltejs/rollup-plugin-svelte). I haven't had any difficulties with this yet, so consider it a nice-to-have for now :)

Message from [`rollup-plugin-svelte`](https://github.com/sveltejs/rollup-plugin-svelte) when building our app:
> [rollup-plugin-svelte] The following packages did not export their `package.json` file so we could not check the "svelte" field. If you had difficulties importing svelte components from a package, then please contact the author and ask them to export the package.json file.
>
> \- chart.js

### Possible Implementation

_No response_