replace mobile_scanner_arguments with a platform agnostic equivalent

@@ -21,7 +21,6 @@ export 'src/objects/contact_info.dart';
 export 'src/objects/driver_license.dart';
 export 'src/objects/email.dart';
 export 'src/objects/geo_point.dart';
-export 'src/objects/mobile_scanner_arguments.dart';
 export 'src/objects/person_name.dart';
 export 'src/objects/phone.dart';
 export 'src/objects/sms.dart';

+import 'package:flutter/widgets.dart';
+
+import 'package:mobile_scanner/src/mobile_scanner_view_attributes.dart';
+
+/// An implementation for [MobileScannerViewAttributes] for platforms that provide a [Texture].
+class MobileScannerTextureViewAttributes
+    implements MobileScannerViewAttributes {
+  const MobileScannerTextureViewAttributes({
+    required this.textureId,
+    required this.hasTorch,
+    required this.size,
+  });
+
+  /// The id of the [Texture].
+  final int textureId;
+
+  @override
+  final bool hasTorch;
+
+  @override
+  final Size size;
+}

+import 'dart:ui';
+
+/// This interface defines the attributes for the mobile scanner view.
+abstract class MobileScannerViewAttributes {
+  /// Whether the current active camera has a torch.
+  bool get hasTorch;
+
+  /// The size of the camera output.
+  Size get size;
+}

-import 'package:flutter/material.dart';
-
-/// The start arguments of the scanner.
-class MobileScannerArguments {
-  /// The output size of the camera.
-  /// This value can be used to draw a box in the image.
-  final Size size;
-
-  /// A bool which is true if the device has a torch.
-  final bool hasTorch;
-
-  /// The texture id of the capture used internally.
-  final int? textureId;
-
-  /// The texture id of the capture used internally if device is web.
-  final String? webId;
-
-  /// Indicates how many cameras are available.
-  ///
-  /// Currently only supported on Android.
-  final int? numberOfCameras;
-
-  MobileScannerArguments({
-    required this.size,
-    required this.hasTorch,
-    this.textureId,
-    this.webId,
-    this.numberOfCameras,
-  });
-}

+import 'package:flutter/widgets.dart';
+
+import 'package:mobile_scanner/src/mobile_scanner_view_attributes.dart';
+
+/// An implementation for [MobileScannerViewAttributes] for the web.
+class MobileScannerHtmlViewAttributes implements MobileScannerViewAttributes {
+  const MobileScannerHtmlViewAttributes({
+    required this.htmlElementViewType,
+    required this.hasTorch,
+    required this.size,
+  });
+
+  @override
+  final bool hasTorch;
+
+  /// The [HtmlElementView.viewType] for the underlying [HtmlElementView].
+  final String htmlElementViewType;
+
+  @override
+  final Size size;
+}