Repalcement of EJB @Asynchronous and @Suspend AysncResponse

In the traditional Jaxrs2.x (Java EE7/8), [there are several approaches](https://github.com/hantsy/ee8-sandbox/tree/master/jaxrs-async/src/main/java/com/hantsylabs/example/ee8/jaxrs) to support async response in Jaxrs.

We can use ejb `@Asychronous` and `@Suspend` AsyncResponse like this.

```java
@Path("ejb")
@Stateless
public class EjbAsyncResource {

@Inject
Logger LOG;

@GET
@Asynchronous // from ejb
public void getAsync(final @Suspended AsyncResponse res) {

//perform long run operations.
try {
LOG.log(Level.INFO, " execute long run task in EjbAsyncResource");
Thread.sleep(500);
} catch (InterruptedException ex) {
LOG.log(Level.SEVERE, "error :" +ex.getMessage());
}

res.resume(Response.ok("Asynchronus EJB resource").build());
}

}
```

And as planned in the future Jakarta EE specs, the EJB will be replaced with new CDI compatible replacement.

Currently, there is a new `@Asynchronous` added in the concurrency 3.0 spec. But it seems this annotation can not replace the ejb `@Asynchronous` in the above case.

Start by reviewing the linked JAX-RS async example and comparing its EJB @Asynchronous and @Suspended AsyncResponse usage with the Concurrency 3.0 @Asynchronous annotation mentioned in the issue. Determine the intended Jakarta EE replacement and define a concrete API or specification outcome before implementation; the issue is done only when that replacement is clearly supported or documented.

Written by the indexing model from the issue text.