docs: move examples dir out of components dir

docs/examples/validation/CustomNode.vue

@@ -0,0 +1,25 @@
+<script setup>
+import { Handle, Position } from '@vue-flow/core'
+
+const props = defineProps({
+  id: {
+    type: String,
+    required: true,
+  },
+  isValidSourcePos: {
+    type: Function,
+    required: false,
+  },
+})
+</script>
+
+<script>
+export default {
+  inheritAttrs: false,
+}
+</script>
+
+<template>
+  <Handle type="target" :position="Position.Left" :is-valid-connection="props.isValidSourcePos" />
+  <div>{{ props.id }}</div>
+</template>