Fix includes in source/simulation2

Make include-what-you-use happy with some files in source/simulation2
and fix what needs to be fixed.

Ref: #8086
Signed-off-by: Ralph Sennhauser <ralph.sennhauser@gmail.com>

source/simulation2/scripting/JSInterface_Simulation.cpp

@@ -51,7 +51,6 @@
 #include <array>
 #include <cstddef>
 #include <fstream>
-#include <js/PropertyAndElement.h>
 #include <js/RootingAPI.h>
 #include <js/TypeDecls.h>
 #include <js/Value.h>

source/simulation2/scripting/MessageTypeConversions.cpp

@@ -16,9 +16,29 @@
  */
 #include "precompiled.h"
 
-#include "ps/CLogger.h"
 #include "scriptinterface/ScriptConversions.h"
+
+#include "maths/Fixed.h"
+#include "ps/CLogger.h"
+#include "ps/CStr.h"
+#include "scriptinterface/ScriptRequest.h"
 #include "simulation2/MessageTypes.h"
+#include "simulation2/helpers/Player.h"
+#include "simulation2/helpers/Position.h"
+#include "simulation2/system/Entity.h"
+#include "simulation2/system/Message.h"
+
+#include <array>
+#include <cstddef>
+#include <cstdint>
+#include <js/PropertyAndElement.h>
+#include <js/RootingAPI.h>
+#include <js/TypeDecls.h>
+#include <js/Value.h>
+#include <jsapi.h>
+#include <memory>
+#include <string>
+#include <vector>
 
 #define TOJSVAL_SETUP() \
 	JS::RootedObject obj(rq.cx, JS_NewPlainObject(rq.cx)); \

source/simulation2/scripting/ScriptComponent.cpp

@@ -1,4 +1,4 @@
-/* Copyright (C) 2024 Wildfire Games.
+/* Copyright (C) 2025 Wildfire Games.
  * This file is part of 0 A.D.
  *
  * 0 A.D. is free software: you can redistribute it and/or modify
@@ -21,11 +21,13 @@
 
 #include "scriptinterface/FunctionWrapper.h"
 #include "scriptinterface/JSON.h"
-#include "scriptinterface/ScriptInterface.h"
 #include "scriptinterface/Object.h"
-#include "simulation2/serialization/ISerializer.h"
-#include "simulation2/serialization/IDeserializer.h"
-#include "simulation2/system/ComponentManager.h"
+#include "simulation2/system/Component.h"
+#include "simulation2/system/Message.h"
+
+#include <string>
+
+class ScriptInterface;
 
 CComponentTypeScript::CComponentTypeScript(const ScriptInterface& scriptInterface, JS::HandleValue instance) :
 	m_ScriptInterface(scriptInterface), m_Instance(instance)