This issue is filed to to track the required changes in wildfly-core to complete the work on WFLY-11186

Specifically it was identified the following minor changes:

• Make WeldDeploymentMarker available on wildfly-server, where other there are other clases that serve a similar purposes (JPADeploymentMarker, EjbDeploymentMarker)
• Add a method signature that allow retrieve an optional capability API from CapabilityServiceSupport without throwing a checked exception. That can be useful when we need a capability API that it is optional for the demanding subsystem

WeldDeploymentMarker is consideated as part of Weld subsystem, so, we are not going to move it to wfcore