Split DecideAction into several specialized DecideAction functions

* Removes the need to constantly check for fCivilian, ARMED_VEHICLE, ENEMY_ROBOT etc inside DecideAction
* Move AI decision checks into their own functions, such as DecideActionRadioRedAlert
* Add new entry to ActionType. AI_ACTION_INVALID signals that no valid action was found when a function returns, or no valid action is possible
* Do a weighted random selection for choosing target under DecideActionBlackSoldier

ModularizedTacticalAI/include/BoxerPlan.h

@@ -0,0 +1,23 @@
+#pragma once
+
+#include "Plan.h"
+
+namespace AI
+{
+    namespace tactical
+    {
+        /**@class LegacyAIPlan
+         * @brief Component/Concrete Product. Wrapper/Re-Write of DecideAction()
+         *
+         * Wrapper around boxer related AI uplifted from original DecideAction() routines
+         */
+        class LegacyAIBoxerPlan: public Plan
+        {
+            private:
+            public:
+                LegacyAIBoxerPlan(SOLDIERTYPE* npc);
+                virtual void execute(PlanInputData& environment);
+                virtual bool done() const {return false;}
+        };
+    }
+}