* Support extensions for all GraphQL types #81

* Performance improvement: scan definitions/extensions once #86

* Remove redundant methods from MapperUtils #86

* Fix plugin class names: Graphql -> GraphQL #86

* Fix test class name: GraphQLCodegenExtendTest #86

* Delete GraphqlCodegenExtendTest.java

* Introduce codegen for client code - Part 1. #37

* Remove redundant null-checks

* Minor fixes in Request class generation + improve code coverage. #37

* Customizable suffix of ResponseProjection classes. #37

* Code coverage for MappingConfig #37

* Fix method names #37 #53

* Add codegen properties to GraphqlCodegenGradleTask #37

* Rename example module to example-server #37

* Change example-server project for gradle plugin #37

* Add GraphQLResult class which holds response data+errors #37

* Fix GraphQLRequestSerializer #37

* Add example-client project for gradle plugin #37

* Add example-client project to CI and README.md #37

* Code coverage for GraphQLResult #37

* Downgrade all dependencies level to 'implementation' #37

* Fix GraphQL query characters escape + fix errors serialization #37

* Fix GraphQL request serialization #37

* Fix toString() generation for request input classes #37

* Remove redundant apache-commons dependency #37

* Use jackson lib to construct GraphQL query json #37

* Generate Builder for model classes #10

* Tests for MappingConfig #10

* Add Builder config to Maven/Gradle plugins #10

* More coverage for MappingConfig #10

* Fix CI config

* Introduce codegen for client code - Part 1. #37

* Remove redundant null-checks

* Minor fixes in Request class generation + improve code coverage. #37

* Customizable suffix of ResponseProjection classes. #37

* Code coverage for MappingConfig #37

* Fix method names #37 #53

* Cleanup imports/generics

* Remove residual trim() from previous PR

* Add utility function to compare file contents ignoring trailing whitespace
Co-authored-by: NJoffrey Bion <joffrey.bion@booking.com>

* Support for async resolvers

Solves issue: https://github.com/kobylynskyi/graphql-java-codegen/issues/24

* https://github.com/kobylynskyi/graphql-java-codegen/issues/24 Refactors and fixes

* Renamed asyncApi to generateAsyncApi in MappingConfig
* Changes for adding java.util.concurrent import when it comes to async Query or Mutation
* Improved tests coverage