update!: Remove renderer exports

* Slot remains, but default built-in renderer isn't part of the library export
* If a custom renderer is desired, a slot can be used to implement one

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

src/index.ts

@@ -1,6 +1,4 @@
 export { default as VueFlow } from './container/VueFlow/VueFlow.vue'
-export { default as NodeRenderer } from './container/NodeRenderer/NodeRenderer.vue'
-export { default as EdgeRenderer } from './container/EdgeRenderer/EdgeRenderer.vue'
 export { default as Handle } from './components/Handle/Handle.vue'
 export * from './components/Edges'
 export * from './components/Nodes'