Prepare RosConn Deliberation workshop example

[MarcoLm993]

The main changes in this PR are:

• The introduction of a specific prefix for each ROS-related callback (listed here: https://github.com/convince-project/AS2FM/pull/32/files#diff-27c59074bf1cd9058b887ee8a2abe528c0fd679312043cfebc5144f9c6b426f1R60)
• Removal of deprecated argument for the ROS callbacks and triggers (and related adjustment of scxml files)
• Addition of action return code and support for action cancel and abort, making sure there is no clash between action goal_id and code and the various fields
• Use regex for various string-related operations, to increase robustness
• Extend array support to handle deliberation example (here: https://github.com/convince-project/AS2FM/pull/32/files#diff-27f41c294326ec06faadb5d72db2e2fec0e13edf49c94a894b767d12abb1b6d4R1 , not yet running due to unsupported BT decorators)

[MKlauck]

Uhh, that's a huge PR. Thank you very much for all the work 👍 Looks good to me, as far as I can tell. Not sure if we should wait for Christian's review until merging.

[MarcoLm993]

Yes, let's wait for Christian. I will also turn his example into a test, so we can consider this PR truly complete.

[ct2034]

As discussed, I would prefer to keep the Math., because that's how js works

[MarcoLm993]

Yes, that makes sense. I will change this tomorrow. FYI: @m-morelli @SofiaFaraci

[ct2034]

Suggested change

	STATE = 0 # No callback (e.g. state entry/exit)
	TRANSITION = 1 # Transition callback
	ROS_TIMER = 2 # Timer callback
	ROS_TOPIC = 3 # Topic callback
	ROS_SERVICE_REQUEST = 4 # Service callback
	ROS_SERVICE_RESULT = 5 # Service callback
	ROS_ACTION_GOAL = 6 # Action callback
	ROS_ACTION_RESULT = 7 # Action callback
	ROS_ACTION_FEEDBACK = 8 # Action callback
	STATE = auto() # No callback (e.g. state entry/exit)
	TRANSITION = auto() # Transition callback
	ROS_TIMER = auto() # Timer callback
	ROS_TOPIC = auto() # Topic callback
	ROS_SERVICE_REQUEST = auto() # Service callback
	ROS_SERVICE_RESULT = auto() # Service callback
	ROS_ACTION_GOAL = auto() # Action callback
	ROS_ACTION_RESULT = auto() # Action callback
	ROS_ACTION_FEEDBACK = auto() # Action callback

This way its more maintainable. And you need from enum import auto.