Do not require Context to use Fast3dWindow.

[Kenix3]

How are we going to accomplish this since the Window is an abstract base class?
Basically the idea is to pass a Window in for the Context constructor, and the createInstance method.

[briaguya-ai]

libultraship/src/Context.cpp

Lines 258 to 265 in 00c6bcc

	void Context::InitWindow(std::vector<std::shared_ptr<GuiWindow>> guiWindows) {
	if (GetWindow() != nullptr) {
	return;
	}
	mWindow = std::make_shared<Fast::Fast3dWindow>(guiWindows);
	GetWindow()->Init();
	}

ports should do this and pass it into context instead of guiWindows