Refactor auto deploy process

[donbonifacio]

The text serializer (#27) forced the auto deploy actions to rewrite game's history with actual deploy actions. A better approach would be for the AI bots to auto generate the deploy actions and process them, instead of processing an :auto-deploy action, that the engine is responsible to convert in actions.

Having this action is useful on some scenarios, but I believe it should be deprecated and we should make this concept clearer.