Implement missed extraction functions

[ipa-nhg]

The following interfaces are not yet supported by the extraction script:

ROS1:

• Python:
  • [ ] Action server
  • [ ] Action client

ROS2:

• Cpp:
  • [x] Action server
  • [x] Action client
• Python:
  • [ ] Publisher
  • [ ] Subscriber
  • [ ] Service server
  • [ ] Service client
  • [ ] Action server
  • [ ] Action client
  • [ ] Parameters

[ipa-nhg]

ROS2 Cpp action server and clients: #18 Thanks @ipa-hsd