refactor: use dist pkg for examples

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

examples/main.ts

@@ -3,6 +3,11 @@ import './index.css'
 import { DraggablePlugin } from '@braks/revue-draggable'
 import App from './App.vue'
 import { router } from './router'
+/* import the required styles */
+import '@braks/vue-flow/dist/style.css'
+
+/* import the default theme (optional) */
+import '@braks/vue-flow/dist/theme-default.css'
 
 const app = createApp(App)