Added new infinite query class with it's own builder widget and integration with query_bowl
The `cast` method used in mutation and query are now a mixin instead of BasicOperation property
getQueryData wrong arrangment of arguments
Query & Retryer's future property is replaced with Completer
queryFn, fetchFn & fn types corrected
exported all the functions/class/enum from core (incomplete)
flutter dependency dropped since the core is a Dart package