Close the supported features of camel-quarkus-bean component

Add a test coverage for in upstream testsuite:

• https://github.com/apache/camel-quarkus/issues/2361
  • Class component, class:beanName invoke a method on a class instance managed by the component
  • Bean method language - invoke a method on a bean instance looked up in the Camel registry

Bean Binding test coverage is TBD:

• https://camel.apache.org/manual/latest/bean-binding.html
• See https://github.com/apache/camel-quarkus/issues/2492

Docs:

• Document the possibility to use CDI beans with camel bean component https://github.com/apache/camel-quarkus/issues/2491

DoD:

• the tests are in current product milestone branch (2021-M3 - CQ 1.8.x)
• the tests are CQ master branch ensuring the tests will be in future branch

Upstream issue trackers:

• https://github.com/apache/camel-quarkus/issues/2492
• https://github.com/apache/camel-quarkus/issues/2361
• https://github.com/apache/camel-quarkus/issues/2537