Generated OpenAPI spec is not compliant

[Rattlyy]

https://github.com/codeborne/klite/blob/2f898f442d90f5d70fe6ea3b101dde1e2e1bf673/openapi/src/OpenAPI.kt#L90C1-L90C35

This writes the enum name in all caps, "QUERY" etc. This isn't compliant to OpenAPI spec and most codegens will ignore the parameters.

[Rattlyy]

Hotfix:

val jackson = kliteJsonMapper {
            this.addModules(SimpleModule(
                "enum hotfix"
            ).addSerializer<ParameterIn>(ParameterIn::class.java,
                object : JsonSerializer<ParameterIn>() {
                    override fun serialize(
                        value: ParameterIn,
                        gen: JsonGenerator,
                        serializers: SerializerProvider
                    ) {
                        gen.writeString(value.toString().lowercase())
                    }
                }
            ))
        }

        use(JsonBody(jackson))