[AMQ-9237] Add META-INF/services to activemq-client-jakarta

[mattrpav]

No description provided.

[cshannon]

This shows that we really need tests. We likely need to use Maven here to and do something where we fork another JVM. We should really run the client against a broker to verify it can connect and work so I think that needs to be included as part of this. We need to verify all the transports work in a real test that isn't ignored.

[mattrpav]

@cshannon I manually verified the client works for tcp:// and ssl://, and the jar contains the META-INF/services/*.

I agree we need a unit test, but I'm not seeing a quick path to getting a test in-build, since we'd have to implement a new test pattern. The activemq-run maven plugin splits off a thread, not a process on 'fork = true'.

[cshannon]

Alright, can go ahead and get this merged so we can do 5.18.1 as need to get this fixed but for 5.19.0, especially with more planned changes we definitely can't release without automated testing in some way.