Add support for PAX A80 (64 bit device)

[tonyrbf96]

I am getting this error executing

await FlutterPaxPrinterUtility.init;

ERROR

FATAL EXCEPTION: main
Process: com.pinserve.prepaidmini, PID: 26229
java.lang.UnsatisfiedLinkError: dlopen failed: "/data/app/com.mahatech.flutter_pax_printer_utility_example-1/lib/arm64/libDeviceConfig.so" is 32-bit instead of 64-bit
at java.lang.Runtime.loadLibrary0(Runtime.java:989)
at java.lang.System.loadLibrary(System.java:1530)
at com.pax.dal.impl.utils.DeviceConfig.(SourceFile:22)
at com.pax.dal.impl.utils.ServiceUtils.getDeviceEnable(SourceFile:90)
at com.pax.dal.impl.utils.ServiceUtils.isModuleEnable(SourceFile:102)
at com.pax.dal.impl.D.u(SourceFile:121)
at com.pax.dal.impl.D.init(SourceFile:128)
at com.pax.dal.impl.PrinterImplDecorator.init(SourceFile:55)
at com.mahatech.flutter_pax_printer_utility.PrinterUtility.init(PrinterUtility.java:43)
at com.mahatech.flutter_pax_printer_utility.FlutterPaxPrinterUtilityPlugin.onMethodCall(FlutterPaxPrinterUtilityPlugin.java:45)
at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:267)
at io.flutter.embedding.engine.dart.DartMessenger.invokeHandler(DartMessenger.java:292)
at io.flutter.embedding.engine.dart.DartMessenger.lambda$dispatchMessageToQueue$0$io-flutter-embedding-engine-dart-DartMessenger
at io.flutter.embedding.engine.dart.DartMessenger$$ExternalSyntheticLambda0.run(D8$$SyntheticClass)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6119)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:969)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:859)

DEVICE

Model A80
Debug Only
Android 7.1.1
Kernel 3.10.65