* agents (higher than simple ai) will be able to get best pairs to the
every possible game object thanks to new abstract class - "getPairs"

* best pair finding for enemies

* bases know are able search for their units

* addIntention is know functional (TODO add powers)
* Ai has now more internal actions available.

* Some bugs repaired connected with evaluation of next action

* Ai is now more flexible in combat

* Prepared actions for healing units

* bases now provide API for getting allies and friendly units