add basic vite setup

demos/preview/DemoFrame.vue

@@ -0,0 +1,58 @@
+<template>
+  <div class="flex flex-col relative min-h-[5rem]">
+    <div class="absolute top-0 left-0 w-full h-full flex justify-center items-center pointer-events-none" v-if="isLoading">
+      <svg
+        class="animate-spin -ml-1 mr-3 h-5 w-5"
+        xmlns="http://www.w3.org/2000/svg"
+        fill="none"
+        viewBox="0 0 24 24"
+      >
+        <circle
+          class="opacity-25"
+          cx="12"
+          cy="12"
+          r="10"
+          stroke="currentColor"
+          stroke-width="4"
+        />
+        <path class="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z" />
+      </svg>
+    </div>
+    <iframe
+      class="bg-transparent max-h-[400px]"
+      v-resize.quiet="{ scrolling: 'omit' }"
+      :src="src"
+      width="100%"
+      height="0"
+      frameborder="0"
+      @load="onLoad"
+    />
+  </div>
+</template>
+
+<script>
+export default {
+  props: {
+    src: {
+      required: true,
+      type: String,
+    },
+  },
+
+  data() {
+    return {
+      isLoading: true,
+    }
+  },
+
+  methods: {
+    onLoad() {
+      this.isLoading = false
+    },
+  },
+}
+</script>
+
+<style>
+
+</style>