NPM: add `@uppy/core`

[thibsy]

This PR adds @uppy/core as npm package.

Usage:

• 17+ usages in the codebase (to come).

Wrapped By:

• ILIAS\UI\Component\Input\Field\File and file.js (to come)

Reasoning:

• This package could be used to replace the dropzone package, which is not actively maintained anymore.
• The package supports different file uploading mechanisms, such as resumable (or chunked) uploads.
• The package leaves UI implementation up to the consumer, which comes in handy when wrapping this library in our UI component(s).

Maintenance:

• The package is actively maintained, see GitHub releases.

Links:

• Package manager: https://www.npmjs.com/package/@uppy/core
• GitHub: https://github.com/transloadit/uppy
• Documentation: https://uppy.io/docs/uppy

[dsstrassner]

@matthiaskunkel:

Your comment is missing here.

[matthiaskunkel]

Jour Fixe, 22 JAN 2024: Dependency accepted for ILIAS 10.

[klees]

This should have become part of ILIAS 10 via this PR. As always, something might have gone wrong. If you are still missing that package, please ping me.

Kind regards!