Introduce `HttpServiceProxyFactory#createClient` Kotlin extension

[sdeleuze]

To allow createClient<TestHttpService>() syntax instead of createClient(TestHttpService::class.java).

[srydberg]

@sdeleuze I get the below error, and this change seems to break java modules since you are exporting a package already included in spring-web from the spring-webflux module. Is this tracked or do we have a workaround?

...module-info.java:1: error: module com.module-a reads package org.springframework.web.service.invoker from both spring.webflux and spring.web module com.module-a { ^

[sbrannen]

@srydberg, that appears to have been oversight: HttpServiceProxyFactoryExtensions should be in the same module as HttpServiceProxyFactory.

Would you mind creating a new ticket to track this?

[sdeleuze]

I have created #30042 related issue since I was about to push the fix, so no need to create it. Thanks for catching this.

[srydberg]

Thanks alot 🙇🏻‍♂️