Add possibility to generate multiple Clients and Servers using Micronaut OpenAPI

[CezaryBD]

Feature description

Hello. I would like to have a possibility to do like:

micronaut {
    runtime("netty")
    testRuntime("junit5")
    openapi {
        client(file("src/openapi/openapi.yml")) {
            modelPackageName = "com.model"
            invokerPackageName = "com.invoker"
        }
        client(file("src/openapi/openor.yml")) {
            modelPackageName = "com.model1"
            invokerPackageName = "com.invoker2"
        }
    }
}

and use multiple clients.

[melix]

You can already do this, you only need to provide a name:

micronaut {
    runtime("netty")
    testRuntime("junit5")
    openapi {
        client("first", file("src/openapi/openapi.yml")) {
            modelPackageName = "com.model"
            invokerPackageName = "com.invoker"
        }
        client("second", file("src/openapi/openorch.yml")) {
            modelPackageName = "com.model1"
            invokerPackageName = "com.invoker2"
        }
    }
}