feat(store, flow)!: Add apply changes handlers

* flow will not update changes unless a handler to apply changes is passed
* a default handler is available in the useVueFlow composable
* removeElements export removed

src/store/store.ts

@@ -2,9 +2,10 @@ import { getCurrentInstance } from 'vue'
 import useState, { initialState } from './state'
 import useActions from './actions'
 import useGetters from './getters'
-import { FlowExportObject, FlowHooksOn, FlowOptions, FlowState, FlowStore, Store } from '~/types'
+import { EmitFunc, FlowExportObject, FlowHooksOn, FlowOptions, FlowState, FlowStore, Store } from '~/types'
 import { StoreSymbol } from '~/context'
 import { onLoadToObject } from '~/utils'
+import { useHooks, useStore } from '~/store/index'
 
 const useFlowStore = (id: string, preloadedState: FlowState): Store => {
   const state = reactive(useState(preloadedState))
@@ -61,6 +62,12 @@ export const createStore = (options?: FlowOptions) => {
   return store
 }
 
+export const initFlow = (emit: EmitFunc, id?: string): FlowStore => {
+  const store = useStore({ id })
+  useHooks(store, emit)
+  return store
+}
+
 export default (options?: FlowOptions): FlowStore => {
   const currentInstance = getCurrentInstance()
   let store = currentInstance ? inject(StoreSymbol, undefined) : false