For EAN13 and similar barcodes separately set the guard bar height


<img width="696" height="569" alt="Image" src="https://github.com/user-attachments/assets/83386fc6-64c8-4085-82de-c53f74bf4369" />

Please add the ability to control the data bar height (shorter bars) and the guard bar height (longer bars).

This is an image from a barcode designer where you can separately set the height of the guard bars and data bars.