Modifications to barcode scanner app to allow full screen previews on Android devices.

Steps to build a new .aar

• Clone this repo
• Open it in Android Studio
• Update any source files as needed (current version is: https://github.com/zxing/zxing/releases/tag/BS-4.7.5):
  • Copy all files from core
  • From the android folder grab the src/.../android folder and paste that to the appropriate package
  • Same for android-core
  • Note that R.java is generated when building and is supposed to be in build/generated/source/r/debug/barcodescanner/xservices/nl/barcodescanner/R
  • Re-add the 'flip camera' feature and the 'portrait scan' feature I added before!
  • Make sure no app_name tag is active in the res/values*/string.xml files
• Open the Gradle toolwindow
• Clean barcodescanner > build > outputs
• Run barcodescanner > Tasks > build > build
• The (release) .aar will be generated in barcodescanner > build > outputs
• Commit and push any changes made!

###The generated .aar is used in:

• NativeScript BarcodeScanner Plugin
• Cordova BarcodeScanner Plugin