fix!: props and composable not merging together properly

* Add getter for node/edge types
* change nodeTypes prop type to only Record<string, NodeType> - same for edges
* Add rgb example
* remove v-model for elements

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

examples/router.ts

@@ -5,6 +5,10 @@ export const routes: RouterOptions['routes'] = [
     path: '/',
     redirect: '/overview',
   },
+  {
+    path: '/rgb',
+    component: () => import('./RGBFlow/RGBFlow.vue'),
+  },
   {
     path: '/basic',
     component: () => import('./Basic/Basic.vue'),