feat(localization): add and update translations for multiple languages

- Introduced new localization files for Albanian, German, Spanish, Portuguese, and Chinese, enhancing the application's multilingual support.
- Added new keys and updated existing translations in project-view, task-list-table, and settings files to improve user experience across different languages.
- Enhanced error handling and empty state messages in task management components to provide clearer feedback to users.
- Updated tooltip texts and button labels for better clarity and consistency in the user interface.

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

@@ -36,6 +36,7 @@
   "addTaskText": "+ 添加任务",
   "addSubTaskText": "+ 添加子任务",
   "addTaskInputPlaceholder": "输入任务并按回车键",
+  "noTasksInGroup": "此组中没有任务",
   "openButton": "打开",
   "okButton": "确定",
   "noLabelsFound": "未找到标签",
@@ -52,5 +53,74 @@
     "convertToTask": "转换为任务",
     "delete": "删除",
     "searchByNameInputPlaceholder": "按名称搜索"
+  },
+  "setDueDate": "设置截止日期",
+  "setStartDate": "设置开始日期",
+  "clearDueDate": "清除截止日期",
+  "clearStartDate": "清除开始日期",
+  "dueDatePlaceholder": "截止日期",
+  "startDatePlaceholder": "开始日期",
+
+  "emptyStates": {
+    "noTaskGroups": "未找到任务组",
+    "noTaskGroupsDescription": "创建任务或应用筛选器后，任务将显示在此处。",
+    "errorPrefix": "错误：",
+    "dragTaskFallback": "任务"
+  },
+
+  "customColumns": {
+    "addCustomColumn": "添加自定义列",
+    "customColumnHeader": "自定义列",
+    "customColumnSettings": "自定义列设置",
+    "noCustomValue": "无值",
+    "peopleField": "人员字段",
+    "noDate": "无日期",
+    "unsupportedField": "不支持的字段类型",
+    
+    "modal": {
+      "addFieldTitle": "添加字段",
+      "editFieldTitle": "编辑字段",
+      "fieldTitle": "字段标题",
+      "fieldTitleRequired": "字段标题为必填项",
+      "columnTitlePlaceholder": "列标题",
+      "type": "类型",
+      "deleteConfirmTitle": "确定要删除此自定义列吗？",
+      "deleteConfirmDescription": "此操作无法撤销。与此列关联的所有数据将被永久删除。",
+      "deleteButton": "删除",
+      "cancelButton": "取消",
+      "createButton": "创建",
+      "updateButton": "更新",
+      "createSuccessMessage": "自定义列创建成功",
+      "updateSuccessMessage": "自定义列更新成功",
+      "deleteSuccessMessage": "自定义列删除成功",
+      "deleteErrorMessage": "删除自定义列失败",
+      "createErrorMessage": "创建自定义列失败",
+      "updateErrorMessage": "更新自定义列失败"
+    },
+    
+    "fieldTypes": {
+      "people": "人员",
+      "number": "数字",
+      "date": "日期",
+      "selection": "选择",
+      "checkbox": "复选框",
+      "labels": "标签",
+      "key": "键",
+      "formula": "公式"
+    }
+  },
+
+  "indicators": {
+    "tooltips": {
+      "subtasks": "{{count}} 个子任务",
+      "subtasks_plural": "{{count}} 个子任务",
+      "comments": "{{count}} 条评论",
+      "comments_plural": "{{count}} 条评论",
+      "attachments": "{{count}} 个附件",
+      "attachments_plural": "{{count}} 个附件",
+      "subscribers": "任务有订阅者",
+      "dependencies": "任务有依赖项",
+      "recurring": "重复任务"
+    }
   }
 }