[ftr] Import dependencies (e.g. web components) via packages #156
Description
Is your feature request related to a problem? Please describe.
Currently web components are integrated via Git submodules which has some advantages and comes with disadvantages in the organization and maintenance. An approach to deal with this are npm packages. Web components can be published there and then imported into the frontend.
Describe the solution you'd like
Make frontend read/import JS dependencies from npm.
Additional context
Edirom/Edirom-Online#641