TF-3719 Add handle export log to device if need

Signed-off-by: dab246 <tdvu@linagora.com>

lib/main/exceptions/permission_exception.dart

@@ -0,0 +1,15 @@
+import 'package:equatable/equatable.dart';
+
+abstract class PermissionException with EquatableMixin implements Exception {
+
+  final String? message;
+
+  const PermissionException({this.message});
+}
+
+class NotGrantedPermissionStorageException extends PermissionException {
+  const NotGrantedPermissionStorageException() : super(message: 'Permission Storage has not been granted access');
+
+  @override
+  List<Object?> get props => [super.message];
+}