feat(adapter): Add Vue Virtual Adapter

[s-montigny-desautels]

Hi! I made a Vue adapter for virtual-core. Here is a stackblitz demo.

I am wrapping the Virtualizer instance with a shallowRef and manually calling triggerRef on it to keep reactivity. I am also calling both getScrollElement and estimateSize inside the watchEffect since most of the time, an Element is inside a ref and we need to update the options when it changes.

Plean let me know if you have any suggestions!