Modify ExecutorServiceFactory API to provide a way to distinguish between pool types

#### Describe the feature

When `ExecutorServiceFactory.createExecutor()` is called, provide a method on the API to distinguish the type of executor being created. Maybe it's as simple as passing the name the `ThreadFactory` is created with?

#### Use cases

In Quarkus we want the ability to replace the default Executor in some situations, such as the Vert.x worker thread pool, with a shared pool we've created, but other pools create their own `Executor` instance.

#### Contribution

Happy to contribute a PR once it's determined the best way to provide an indicator to differentiate the pool types