Add a way to set the timeout to reactive jdk client

[m4tt30c91]

Add a setTimeout method to the http reactive jdk native connector

[jhoeller]

Thanks for the suggestion! We should name that method setReadTimeout, aligned with JdkClientHttpRequestFactory, and possibly pass the Duration straight into an extended JdkClientHttpRequest constructor (since the request class is not public anyway, we can flexibly change the constructor signature to accept a Duration parameter that we can directly apply there).

Feel free to revise the PR accordingly, otherwise we can also implement it directly.

[m4tt30c91]

Sure, gonna review the pull request accordingly; is it ok if I add a commit on top, or would you prefer a single one to keep it cleaner?

[snicoll]

Both are fine but if you can squash that’s better.

[m4tt30c91]

I did review the pull request, let me know if that is ok.

[snicoll]

Thanks for making your first contribution to Spring Framework, @m4tt30c91.