New layout:
- `e2e-tests-core` for "officially" supported frameworks : Vue + Angular (+ React + Web Components in e2e-tests-pnp)
- `e2e-tests-extended` for other frameworks: Preact, Svelte, Riot, Rax etc
- `e2e-tests-pnp` for some frameworks/setups compatible with PnP: React + WC