Add components index.md

components/affix/index.md

+# Affix
+
+- category: Components
+- chinese: 固定
+
+---
+

components/carousel/index.md

+# Carousel
+
+- category: Components
+- chinese: 走马灯
+
+---
+

components/menu/index.md

+# Menu
+
+- category: Components
+- chinese: 导航菜单
+
+---
+

components/notification/index.md

+# Notification
+
+- category: Components
+- chinese: 系统通知框
+
+---
+
+

components/tree/index.md

+# Tree
+
+- category: Components
+- chinese: 树形控件
+
+---
+
+

components/upload/index.md

+# Upload
+
+- category: Components
+- chinese: 文件上传
+
+---
+
+