屏幕适配

lib/app/config/app_config.dart

@@ -1,3 +1,4 @@
+import 'package:flutter/material.dart';
 import 'package:recording_tool/core/platform/app_platform_info.dart';
 
 enum AppEnvironment { dev, staging, prod }
@@ -21,6 +22,7 @@ class AppConfig {
   static AppPackageInfo? packageInfo;
 
   static const appName = '飞行极控';
+  static const designSize = Size(375, 812);
 
   static void configure({
     required AppEnvironment environment,