feat: update project structure and add new pages

- Changed the clone URL in README to point to the new webpack-taro-template.
- Added 'mine' page to app configuration.
- Enhanced index page styles and structure.
- Created BottomNav component for navigation.
- Added configuration and styles for the new 'mine' page.
- Introduced navItems configuration for navigation.
- Added AGENTS.md for project overview and development guidelines.

src/app.config.ts

@@ -1,6 +1,7 @@
 export default defineAppConfig({
   pages: [
-    'pages/index/index'
+    'pages/index/index',
+    'pages/mine/index'
   ],
   window: {
     backgroundTextStyle: 'light',