refactor(types,flow)!: Use reactivity transform and remove store property

# What's changed?

* Remove store property from usevueflow return value
* All previously available properties are still there, just not nested inside an additional store object to avoid confusion + duplicates
* use reactivity transform to get rid of .value calls

package/vite.config.ts

@@ -40,11 +40,13 @@ export default defineConfig({
     },
   },
   plugins: [
-    vue(),
+    vue({
+      reactivityTransform: true,
+    }),
     vueTypes(),
     svgLoader(),
     AutoImport({
-      imports: ['vue', '@vueuse/core'],
+      imports: ['vue', '@vueuse/core', 'vue/macros'],
       dts: 'src/auto-imports.d.ts',
     }),
     replace({