Create Attack move heuristics and calculations

[Vawandinhax]

Create the basic attack move calculations. The heuristic will be tuned once everything is working, but the calculations should involve:

• The Current Health of the Unit attacking
• The Current Health of the Unit defending
• The estimated amount of damage the Unit attacking will cause
• The estimated amount of damage the Unit attacking will take
• The amount of Influence gained from moving to such position

Also take into account that in the case the defending unit is destroyed, the action should receive bonus valoration.