feat: 添加从回测任务创建跟单配置功能

- 在回测任务列表页和详情页添加'创建跟单'按钮
- 实现从回测任务配置自动填充到跟单配置表单
- 复用 AddModal 组件，支持 preFilledConfig 参数预填充
- 修复配置字段从 BacktestConfigDto 获取的问题
- 列表页点击按钮时先获取任务详情以获取配置信息
- 添加调试日志便于问题排查
- 更新多语言文案：'一键创建跟单配置' -> '创建跟单'

frontend/src/locales/en/common.json

@@ -1279,6 +1279,8 @@
     "retryConfirm": "Are you sure you want to retry this backtest task? It will continue from the breakpoint and preserve processed trades.",
     "deleteConfirm": "Are you sure you want to delete this backtest task?",
     "stopConfirm": "Are you sure you want to stop this backtest task?",
+    "createCopyTrading": "Create Copy Trading",
+    "createCopyTradingSuccess": "Copy trading config created successfully",
     "noTasks": "No backtest tasks",
     "noTrades": "No trade records",
     "fetchTasksFailed": "Failed to fetch task list",