Implement Agent stamina

[renardyreveur]

The agents have infinite stamina right now. Make them suffer! 💀

[renardyreveur]

how does the stamina drop, dependent on what, how does it recharge, dependent on what, what does it affect, by how much?

[renardyreveur]

The latest commit: a0ba833abc94b96ea85ba4bdb89205a79e0f6a35 implements a simple movement action that is affected by stamina.

• Stamina decay/growth is dependent on the speed of the agent and the action of the agent.
• The max_speed attribute of the agent is affected by a decay factor given by the current stamina.

The rule-based test policy also considers stamina in its action parameters to recharge, etc.

Run the test script to watch it in action.

During the next milestone, a more concise and precise issue should be created to tune this behaviour and make it into something more tangible and impactful.