move Phone to its own file

@@ -6,6 +6,7 @@ Improvements:
 * The `latitude` and `longitude` of a `GeoPoint` are now non-null.
 * The `phones` and `urls` of `ContactInfo` are now non-null.
 * The `url` of a `UrlBookmark` is now non-null.
+* The `type` of `Phone` is now non-null.
 
 ## 3.5.0
 New Features:

@@ -22,6 +22,7 @@ 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';
 export 'src/objects/url_bookmark.dart';
 export 'src/objects/wifi.dart';

@@ -4,12 +4,12 @@ import 'dart:ui';
 import 'package:mobile_scanner/src/barcode_utility.dart';
 import 'package:mobile_scanner/src/enums/barcode_format.dart';
 import 'package:mobile_scanner/src/enums/barcode_type.dart';
-import 'package:mobile_scanner/src/enums/phone_type.dart';
 import 'package:mobile_scanner/src/objects/calendar_event.dart';
 import 'package:mobile_scanner/src/objects/contact_info.dart';
 import 'package:mobile_scanner/src/objects/driver_license.dart';
 import 'package:mobile_scanner/src/objects/email.dart';
 import 'package:mobile_scanner/src/objects/geo_point.dart';
+import 'package:mobile_scanner/src/objects/phone.dart';
 import 'package:mobile_scanner/src/objects/sms.dart';
 import 'package:mobile_scanner/src/objects/url_bookmark.dart';
 import 'package:mobile_scanner/src/objects/wifi.dart';
@@ -121,22 +121,3 @@ class Barcode {
         url = toUrl(data['url'] as Map?),
         wifi = toWiFi(data['wifi'] as Map?);
 }
-
-/// Phone number info.
-class Phone {
-  /// Gets phone number.
-  ///
-  /// Returns null if not available.
-  final String? number;
-
-  /// Gets type of the phone number.
-  ///
-  /// See also [PhoneType].
-  /// Returns null if not available.
-  final PhoneType? type;
-
-  /// Create a [Phone] from native data.
-  Phone.fromNative(Map data)
-      : number = data['number'] as String?,
-        type = PhoneType.values[data['type'] as int];
-}

 import 'package:mobile_scanner/src/objects/address.dart';
-import 'package:mobile_scanner/src/objects/barcode.dart';
 import 'package:mobile_scanner/src/objects/email.dart';
 import 'package:mobile_scanner/src/objects/person_name.dart';
+import 'package:mobile_scanner/src/objects/phone.dart';
 
 /// A person's or organization's business card.
 /// For example a VCARD.

+import 'package:mobile_scanner/src/enums/phone_type.dart';
+
+/// Phone number information from a barcode.
+class Phone {
+  /// Construct a new [Phone] instance.
+  const Phone({
+    this.number,
+    this.type = PhoneType.unknown,
+  });
+
+  /// Create a [Phone] from the given [data].
+  factory Phone.fromNative(Map<Object?, Object?> data) {
+    return Phone(
+      number: data['number'] as String?,
+      type: PhoneType.fromRawValue(data['type'] as int? ?? 0),
+    );
+  }
+
+  /// The phone number value.
+  final String? number;
+
+  /// The type of the phone number.
+  final PhoneType type;
+}