OEP-65: Frontend composability next steps and a bit of visionin'

While we have no hard plan, yet, some thought has indeed been given to the matter, and some things have changed. For starters, for the moment we’ve ditched our module federation plans, so we’re a bit more free to pick between Webpack alternatives.

The current contenders seem to be Vite and Rsbuild. At some point we’ll be launching a full blow discovery into which one suits the project best.