refactor(types)!: Remove elements prop, change EdgeTypes/NodeTypes prop to string[]

* no more elements prop - v-model instead!
* Instead of passing an object map to components just pass in an array of strings as nodeTypes/edgeTypes object
* the string name will either be resolved to a dynamic component with :is="type" or a slot with the type-name
* update all examples

Signed-off-by: Braks <78412429+bcakmakoglu@users.noreply.github.com>

examples/Provider/ProviderExample.vue

@@ -38,7 +38,7 @@ const onElementsRemove = (elementsToRemove: Elements) => (elements.value = remov
     <Sidebar />
     <div class="vue-flow-wrapper">
       <VueFlow
-        :elements="elements"
+        v-model="elements"
         :connection-mode="ConnectionMode.Loose"
         @element-click="onElementClick"
         @connect="onConnect"