https://sonarcloud.io/component_measures?id=kobylynskyi_graphql-java-codegen&metric=new_coverage&selected=kobylynskyi_graphql-java-codegen%3Asrc%2Fmain%2Fjava%2Fcom%2Fkobylynskyi%2Fgraphql%2Fcodegen%2Fscala%2FScalaGraphQLTypeMapper.java&view=list

* Optimize useless `val`
Others have been done at kotlin
https://github.com/kobylynskyi/graphql-java-codegen/issues/420

* update

* fix GraphQLRequestSerializer toString on scala.Option/Seq

* Small format error

* use case class for `XXParametrizedInput` and create apply for XXGraphQLOperationRequest

* use case class for `XXParametrizedInput` and create apply for XXGraphQLOperationRequest

* change interface method to properties

* change interface method to properties

* Optimize equals

* 1. Refactoring `toString` and `equals` methods(Simplify code bloat caused by large number of fields).
2. For Scala(after that, kotlin will do the same), the `builder` is no longer generated by default.

* rm a invalid `if`

* rm a invalid `if`

* init support scala

* init support scala

* update

* add support for gradle、maven

* add unit test for var field in case class

* fxi maven

* Minor refactoring
Co-authored-by: NBogdan Kobylynskyi <92bogdan@gmail.com>