Finally shattered CObjectHandler.cpp into tiny bits

- This file is now split into multiple smaller files in mapObjects
directory
- CObjectHandler itself now contains only core classes (Handler itself,
CGObject and interfaces)
- Cleaned up excessive #include's through whole project

lib/mapObjects/MapObjects.h

@@ -0,0 +1,25 @@
+#pragma once
+
+/*
+ * MapObjects.h, part of VCMI engine
+ *
+ * Authors: listed in file AUTHORS in main folder
+ *
+ * License: GNU General Public License v2.0 or later
+ * Full text of license available in license.txt file, in main folder
+ *
+ */
+
+// Helper header that includes all map objects, similar to old CObjectHandler.h
+// Possible TODO - remove this header after CObjectHandler.cpp will be fully split into smaller files
+#include "CObjectHandler.h"
+
+#include "CGArmedInstance.h"
+#include "CGBank.h"
+#include "CGHeroInstance.h"
+#include "CGMarket.h"
+#include "CGTownInstance.h"
+#include "CGPandoraBox.h"
+#include "CRewardableObject.h"
+#include "MiscObjects.h"
+#include "CQuest.h"