feat: add text orientation option to dropdown list and translation

src/assets/locales/zh-CN/translation.json

@@ -10,6 +10,7 @@
   "Justify": "两端对齐",
   "Right": "右对齐",
   "Text alignment": "文字对齐",
+  "Text orientation": "文字方向",
   "Synchronisation successful": "同步成功",
   "Permanently Delete": "永久删除",
   "Default search engine": "默认搜索引擎",

src/constants/dropdownList.tsx

@@ -49,6 +49,16 @@ export const dropdownList = [
     ],
     isPDF: false,
   },
+  {
+    title: "Text orientation",
+    value: "textOrientation",
+    option: [
+      { label: "Default", value: "" },
+      { label: "Horizontal", value: "horizontal" },
+      { label: "Vertical", value: "vertical" },
+    ],
+    isPDF: false,
+  },
   {
     title: "Conversion of Chinese",
     value: "convertChinese",