docs: add plugin setup guide

plugin/lib/commonlibf4/include/RE/C/ConcreteObjectFormFactory.h

@@ -0,0 +1,13 @@
+#pragma once
+
+#include "RE/C/ConcreteFormFactory.h"
+
+namespace RE
+{
+	template <class T, ENUM_FORM_ID ID, OBJECT_TYPE TYPE, OBJECT_CATEGORY_TYPE CATEGORY>
+	class __declspec(novtable) ConcreteObjectFormFactory :
+		public ConcreteFormFactory<T, ID>  // 00
+	{
+	public:
+	};
+}