docs: replace codesandbox embed with repl (#122)

* docs: Animations

* docs: add confetti gun

* docs: update basic example on home page

* docs(deps): Add stackblitz sdk to deps

* chore: update yarn.lock

* docs: use vue repl

* docs: remove stackblitz sdk

* docs: basic repl example

* docs: use repl for examples/index.md (basic example)

* docs: pass ext to repl

* docs: add copy plugin

* docs: use import map instead of dynamic imports

* docs: use repl for custom node example

* docs: hide repl errors

* docs: use repl for custom connectionline example

* docs: use repl for edges example

* docs: exclude repl from ssr

* docs: use repl for nested example

* docs: use repl for stress example

* docs: rename customNode to custom-node

* docs: use repl for update-edge example

* docs: use repl for update-node example

* docs: use repl for validation example

* docs: use repl for save-restore example

* docs: scale down minimap in repl examples

* docs: use repl for dnd example

* docs: use repl for empty example

* docs: use repl for hidden example

* docs: use repl for interaction example

* docs: use repl for multi example

* docs: add pinia example with stackblitz

* docs: update basic example

* docs: update examples

* docs: remove transition from intro

* docs: update features

* update: README.md

* docs: scope css

docs/components/examples/dnd/App.vue

@@ -0,0 +1,47 @@
+<script setup>
+import { VueFlow, useVueFlow } from '@braks/vue-flow'
+import Sidebar from './Sidebar.vue'
+
+let id = 0
+const getId = () => `dndnode_${id++}`
+
+const { instance, onConnect, nodes, edges, addEdges, addNodes, viewport } = useVueFlow({
+  nodes: [
+    {
+      id: '1',
+      type: 'input',
+      label: 'input node',
+      position: { x: 250, y: 25 },
+    },
+  ],
+})
+const onDragOver = (event) => {
+  event.preventDefault()
+  if (event.dataTransfer) {
+    event.dataTransfer.dropEffect = 'move'
+  }
+}
+
+onConnect((params) => addEdges([params]))
+
+const onDrop = (event) => {
+  if (instance.value) {
+    const type = event.dataTransfer?.getData('application/vueflow')
+    const position = instance.value.project({ x: event.clientX - 40, y: event.clientY - 18 })
+    const newNode = {
+      id: getId(),
+      type,
+      position,
+      label: `${type} node`,
+    }
+    addNodes([newNode])
+  }
+}
+</script>
+
+<template>
+  <div class="dndflow" @drop="onDrop">
+    <VueFlow @dragover="onDragOver" />
+    <Sidebar />
+  </div>
+</template>