Add on-device barcode scanner

LocalBarcodeScanner.java

public void scanBarcode(Bitmap image) {

    FirebaseVisionImage image = FirebaseVisionImage.fromBitmap(image);
    FirebaseVisionBarcodeDetectorOptions options =
        new FirebaseVisionBarcodeDetectorOptions.Builder()
            .setBarcodeFormats(
                FirebaseVisionBarcode.FORMAT_QR_CODE,
                FirebaseVisionBarcode.FORMAT_AZTEC
            )
            .build();
    FirebaseVisionBarcodeDetector detector = FirebaseVision.getInstance()
        .getVisionBarcodeDetector(options);    
    
    detector.detectInImage(image)
        .addOnSuccessListener(new OnSuccessListener<List<FirebaseVisionBarcode>>() {
            @Override
            public void onSuccess(List<FirebaseVisionBarcode> barcodes) {
                // Task completed successfully
                // ...
            }
        })
        .addOnFailureListener(new OnFailureListener() {
            @Override
            public void onFailure(@NonNull Exception e) {
                // Task failed with an exception
                // ...
            }
        });
}