feat!: Add hooks to store

* For easier access and to avoid context issues with injections hooks are put into the store
* hooks can be accessed and will emit events when the flow has bound its emit function to the hooks
* useHooks and useStore are not exported anymore! Instead, useVueFlow is provided, which will return an instance of the current vue flow store
* Rename NodeIdContextKey to NodeId
* Add addElements function to store to add elements without having to re-set the whole store
* use v-model for elements, re-set elements only if there's an actual change

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

src/types/actions.ts

@@ -22,4 +22,5 @@ export interface FlowActions {
   updateSize: (size: Dimensions) => void
   setConnectionNodeId: (payload: SetConnectionId) => void
   setInteractive: (isInteractive: boolean) => void
+  addElements: (elements: Elements) => void
 }