feat: allow useAutoAnimate with Vue component ref (#186)

This adds support for using `useAutoAnimate` with a component as the parent.  

When you add `ref="parent"` to a component, the element is found at `parent.value.$el`.  This update checks for component elements or a plain HTML element ref.

Author: marshallswain

src/vue/index.ts

@@ -39,8 +39,9 @@ export function useAutoAnimate<T extends Element>(
   }
   onMounted(() => {
     watchEffect(() => {
-      if (element.value instanceof HTMLElement)
-        controller = autoAnimate(element.value, options || {})
+      const el = element.value?.$el || element.value
+      if (el instanceof HTMLElement)
+        controller = autoAnimate(el, options || {})
     })
   })
   onBeforeUnmount(() => {