[cu-dev] pull to update to 3.0 SNAPSHOT needs review

["Nathan Rauh" <nathan.rauh@xxxxxxxxxx>]

Assuming that we
decided to go with 3.0 (vs 2.1) as the Concurrency version for Jakarta
EE 10, here is a pull to add @since 3.0 to all new methods that didn't
already have it.

https://github.com/eclipse-ee4j/concurrency-api/pull/150

and also to update
the pom.xml for 3.0 snapshot, which I've hopefully done correctly.  Please
review and let me know if there are any issues to correct.

With the above
changes, the locally built artifact has:
   
<groupId>jakarta.enterprise.concurrent</groupId>
   
<artifactId>jakarta.enterprise.concurrent-api</artifactId>
   
<version>3.0.0-SNAPSHOT</version>
   
<name>jakarta.enterprise.concurrent-api</name>
   
<description>Jakarta Concurrency</description>
   
<url>https://github.com/eclipse-ee4j/concurrency-api</url>

I'd like to get
to the point where implementations can pull in a snapshot copy to compile
against and make progress on experimenting with it.