웹 테스트용 기본 환경 파일 추가

pubspec.yaml

@@ -69,6 +69,9 @@ flutter:
   # the material Icons class.
   uses-material-design: true
 
+  assets:
+    - assets/.env.development
+
   # To add assets to your application, add an assets section, like this:
   # assets:
   #   - images/a_dot_burr.jpeg