feat(api): update DeviceLocation model and clean up AuthRepositoryImpl and BillingPageSkeleton

apps/mobile/packages/domain/lib/src/core/models/device_location.dart

@@ -2,6 +2,14 @@ import 'package:equatable/equatable.dart';
 
 /// Represents a geographic location obtained from the device.
 class DeviceLocation extends Equatable {
+
+  /// Creates a [DeviceLocation] instance.
+  const DeviceLocation({
+    required this.latitude,
+    required this.longitude,
+    required this.accuracy,
+    required this.timestamp,
+  });
   /// Latitude in degrees.
   final double latitude;
 
@@ -14,14 +22,6 @@ class DeviceLocation extends Equatable {
   /// Time when this location was determined.
   final DateTime timestamp;
 
-  /// Creates a [DeviceLocation] instance.
-  const DeviceLocation({
-    required this.latitude,
-    required this.longitude,
-    required this.accuracy,
-    required this.timestamp,
-  });
-
   @override
-  List<Object?> get props => [latitude, longitude, accuracy, timestamp];
+  List<Object?> get props => <Object?>[latitude, longitude, accuracy, timestamp];
 }