Add Vue as web component library

I think Vue should be here too: https://www.webcomponents.org/libraries

Vue CLI 3 allows you to compile Vue projects as web components.

Start by reading the webcomponents.org library listing and registration flow to find where supported libraries are defined. Add Vue to that list and verify that its entry appears on https://www.webcomponents.org/libraries; the issue does not name a file or test.

Scritto dal modello di indicizzazione a partire dal testo della issue.