Is your feature request related to a problem? Please describe.
I would like to check for security vulnerabilities in flutter/dart projects.

Describe the solution you'd like
Add a file type analyzer for pubspec.yml and pubspec.lock files used by flutter/dart.

Describe alternatives you've considered
There are none.

Additional context
Flutter package documentation: https://flutter.dev/docs/development/packages-and-plugins/using-packages