* also add `.npmrc` which will likely be needed for PNPM support
* this is the extent for our PNPM support right now, as further changes
  in `invenio-cli` are required
* this is based on work from Alex (CERN) and Christoph (TU Graz)

* chase frontend build project changes in Invenio-Assets
* also many thanks to ULB Münster for the help here!

* separate the webpack build config from the frontend assets, because
  keeping them together caused some unexpected behaviour (e.g. copying
  over directories in unexpected places)
* move the background images (*.webp) from the statics to the assets, in
  order to get rid of this incomprehensible alias in webpack.py and make
  it clearer how and why the frontend build works
* add some comments explaining behaviour that is not immediately clear

Moser, Maximilian authored 3 years ago and Wörister, Florian committed 3 years ago

* allows us to install a custom webpack.config.js
* copy the assets files from invenio-assets as a base
* AVIF is a newer image format than WebP with smaller file sizes -however, it is not as widely supported by browsers yet
* convert images to webp