forked from loafle/openapi-generator-original
* feat: add companion object to data classes if the implement the interface java.io.Serializable * style: format template file * style: adapt to project's original code style * fix: add missing imports * style: reverted mustache template to original styling * test: generate additional samples for kotlin-springboot-reactive and kotlin-springboot * docs: name full qualified classname of interface java.io.Serializable to prevent confusion with kotlinx.serialization