chore(dev): 添加代码格式化工具 prettier

- 在 package.json 中添加 format 脚本用于代码格式化
- 安装 prettier 依赖到项目中
- 配置 prettier 支持 vue js ts jsx tsx scss css json 文件格式化

healthlink-his-ui/package.json

@@ -18,6 +18,7 @@
         "test:coverage": "vitest run --coverage",
         "test:ui": "vitest --ui",
         "lint": "eslint . --ext .js,.vue src/",
+        "format": "prettier --write src/**/*.{vue,js,ts,jsx,tsx,scss,css,json}",
         "test:e2e": "playwright test",
         "test:e2e:ui": "playwright test --ui",
         "test:e2e:report": "playwright show-report"
@@ -81,6 +82,7 @@
         "happy-dom": "^20.8.3",
         "jsdom": "^28.1.0",
         "pg": "^8.18.0",
+        "prettier": "^3.8.4",
         "sass": "^1.100.0",
         "typescript": "^5.9.3",
         "unplugin-auto-import": "^0.18.6",