feat(admin-center): implement organization calculation method settings

- Added functionality to update the organization's calculation method (hourly or man-days) in the Admin Center.
- Created a new component for managing the calculation method, including UI elements for selection and saving changes.
- Updated API service to handle the new endpoint for updating the calculation method.
- Enhanced localization files to support new keys related to the calculation method settings.
- Introduced a settings page to manage organization working days and hours alongside the calculation method.

worklenz-frontend/public/locales/zh/admin-center/settings.json

@@ -0,0 +1,17 @@
+{
+  "settings": "设置",
+  "organizationWorkingDaysAndHours": "组织工作日和工作时间",
+  "workingDays": "工作日",
+  "workingHours": "工作时间",
+  "hours": "小时",
+  "monday": "星期一",
+  "tuesday": "星期二",
+  "wednesday": "星期三",
+  "thursday": "星期四",
+  "friday": "星期五",
+  "saturday": "星期六",
+  "sunday": "星期日",
+  "saveButton": "保存",
+  "saved": "设置保存成功",
+  "errorSaving": "保存设置时出错"
+}