[REQ] [Dart] Don't create redundant samples
Created by: nickmeinhold
Is your feature request related to a problem? Please describe.
Running ./bin/dart2-petstore.sh creates 3 identical samples:
samples/client/petstore/dart2/openapisamples/client/petstore/dart2/openapi-browser-clientsamples/client/petstore/dart2/flutter_petstore/openapi
Describe the solution you'd like
Just create one sample