Confirm the choice of Vue 3 as our front-end framework

See https://forum.xwiki.org/t/wiki-3-0-implementation-choices-ui-framework/13171/3

Remaining tasks:

• validate that we can use web components seamlessly inside Vue templates, and check if there is some non-functional consequences (e.g., performance, dev complexity...) -> tested
• study the glue of web components provided by third party library (e.g., how to create a reactive app with a button from a library X, and and table from library Y, and add a row each time the button is clicked)