🚨 Fix more linter hints

Author: AlexV525

lib/src/constants/constants.dart

@@ -5,8 +5,8 @@
 import 'dart:async';
 import 'dart:developer';
 
-import 'package:flutter/widgets.dart';
 import 'package:flutter/foundation.dart';
+import 'package:flutter/widgets.dart';
 import 'package:wechat_camera_picker/wechat_camera_picker.dart';
 
 export 'package:photo_manager/photo_manager.dart';

lib/src/widget/camera_picker_viewer.dart

@@ -6,8 +6,8 @@ import 'dart:async';
 import 'dart:io';
 import 'dart:typed_data';
 
-import 'package:flutter/material.dart';
 import 'package:camera/camera.dart';
+import 'package:flutter/material.dart';
 import 'package:path/path.dart' as path;
 import 'package:video_player/video_player.dart';