Detect position of scanned Code for dynamic overlay

[khainke]

Feature request: Add a position to the code callback, so one could add dynamic overlays. Or if there is another way to realize dynamic overlays, please let me know.

[LaxmikanthMadhyastha]

Hey @khainke I have made changes to expose the barcode model from firebase which includes the bounding box of the detected barcode as well, which you can use to create the overlay. Check it out here.

[khainke]

Thanks, looks like a nice change. But, currently im no longer in need for this. Nonetheless, i think it could be a beneficial addition to the main branch.