Add Checkbox for German Excel Format and Change CSV Separator

This merge request addresses the following changes: 1.Add Checkbox for German Excel Format: Introduced a new checkbox option in the application settings to enable the German Excel format. When selected, this option adjusts the CSV settings to align with the German formatting standards, such as using a semicolon (;) as the separator. 2.Change CSV Separator: Updated the default CSV separator from a comma (,) to a semicolon (;). This change ensures compatibility with the preferred CSV format in many European countries, including Germany.

These changes enhance the application's flexibility and usability for users who require different CSV formats, improving the overall user experience.