Graphql-flutter: Subscriptions Reconnect solution

[rullyalves]

I noticed that graphql_flutter does not have a functional reconnection of subscriptions when the internet connection is interrupted, I created an implementation to take care of that and would like to integrate with the current package, my implementation has already been tested and is fully functional

[mainawycliffe]

Fee free to create a PR against beta, follow guidelines here on make contributions to this library. Make sure to include tests and if possible update documentation where necessary.

[bsr203]

@rullyalves would like to see your implementation. Thanks.

[kdkul]

@mainawycliffe @rullyalves any idea when this solution will be available? I am looking for this solution to implement in one of my project. @rullyalves thanks for valuable solution.

[mainawycliffe]

@rullyalves are you able to create a PR for this?