Add CI/CD pipelines for Flutter and backend projects

finlog_app/app/pubspec.yaml

@@ -3,6 +3,7 @@ description: "A new Flutter project."
 # The following line prevents the package from being accidentally published to
 # pub.dev using `flutter pub publish`. This is preferred for private packages.
 publish_to: 'none' # Remove this line if you wish to publish to pub.dev
+resolution: workspace
 
 # The following defines the version and build number for your application.
 # A version number is three numbers separated by dots, like 1.2.43