Automatically add import when converting to ConsumerWidget or ConsumerStatefulWidget

[minhqdao]

I wish import 'package:flutter_riverpod/flutter_riverpod.dart'; would be automatically added to my Dart file when I'm converting a StatelessWidget or StatefulWidget to a ConsumerWidget or ConsumerStatefulWidget and the package import isn't already present.

Currently it's a two-step procedure: 1) Convert a StatelessWidget or a StatefulWidget to a ConsumerWidget or ConsumerStatefulWidget, followed by 2) Add the import statement. The conversion works even without the import statement. I think the process could be more seamless by automating the second step that everyone has to do anyways.

I'm using VSCode on macOS.

[rrousselGit]

Good idea.

[rrousselGit]

We should do the same for pretty much all quick-fixes.