arco-cli: initialize project

src/components/tab-bar/readme.md

@@ -0,0 +1,12 @@
+## 组件说明
+
+该组件非官方最终设计规范，以单独组件存在。
+
+同时仅仅提供最基本的功能，后续进行优化及更改。
+
+
+## Component description
+
+The component unofficial final design specification exists as a separate component.
+
+At the same time, only the most basic functions are provided, and subsequent optimizations and changes will be made.