refactor：项目升级Vue3+uView Plus

- 改造入口文件、全量替换组件引入
- 过滤器迁移混入，更新忽略配置，新增迁移文档

pages/tabbar/home/template/tpl_flex_two.vue

@@ -3,23 +3,21 @@
     <div class="flex-two">
       <div class="flex-item" @click="modelNavigateTo(res.list[0])">
         <u-image height="250rpx" width="100%" mode="scaleToFill" :src="res.list[0].img" alt>
-          <u-loading slot="loading"></u-loading>
+          <template #loading><u-loading></u-loading></template>
         </u-image>
       </div>
       <div class="flex-item" @click="modelNavigateTo(res.list[1])">
         <u-image height="250rpx" width="100%" mode="scaleToFill" :src="res.list[1].img" alt>
-          <u-loading slot="loading"></u-loading>
+          <template #loading><u-loading></u-loading></template>
         </u-image>
       </div>
     </div>
   </div>
 </template>
 <script>
-import uImage from "@/uview-ui/components/u-image/u-image.vue";
 import { modelNavigateTo } from "./tpl";
 export default {
-  components: { uImage },
-  title: "两张横图",
+    title: "两张横图",
   props: ["res"],
   mounted() {