feat(localization): add timer conflict handling and update translations

- Introduced a new hook `useTaskTimerWithConflictCheck` to manage timer conflicts, prompting users when a timer is already running for a different task.
- Updated localization files for Albanian, German, English, Spanish, Portuguese, and Chinese to include new translation keys related to timer conflict handling and cancellation.
- Refactored components to utilize the new timer hook, enhancing user experience by preventing overlapping timers.

worklenz-frontend/public/locales/zh/common.json

@@ -5,5 +5,6 @@
   "signup-failed": "注册失败。请确保填写所有必填字段并重试。",
   "reconnecting": "与服务器断开连接。",
   "connection-lost": "无法连接到服务器。请检查您的互联网连接。",
-  "connection-restored": "成功连接到服务器"
+  "connection-restored": "成功连接到服务器",
+  "cancel": "取消"
 }

worklenz-frontend/public/locales/zh/task-list-table.json

@@ -129,5 +129,11 @@
       "dependencies": "任务有依赖项",
       "recurring": "重复任务"
     }
+  },
+
+  "timer": {
+    "conflictTitle": "计时器已在运行",
+    "conflictMessage": "您在项目\"{{projectName}}\"中的\"{{taskName}}\"任务正在运行计时器。您是否要停止该计时器并为此任务启动新的计时器？",
+    "stopAndStart": "停止并启动新计时器"
   }
 }