[FEATURE] Scanning area specific camera photo

[Divjyot]

Hi, I am using your repo code for base and trying to add features to camera,

1. where a square outline is shown on camera preview (Done)
2. when a photo is clicked, if QRCode is not in that area, (can be anywhere else in frame), results in none detected else if it is inside that square area while photo is clicked than yes. (NOT DONE)..

I am figuring out how todo 2. I have searched online many things, like people using AVCaptureMetadataOutput instead of AVCapturePhotoOutput. I am really now sure how to do it in this code. what modifications? can you please guide ? thanks