docs: add plugin setup guide

plugin/lib/commonlibf4/include/RE/F/FavoriteMgr_Events.h

@@ -0,0 +1,16 @@
+#pragma once
+
+namespace RE
+{
+	namespace FavoriteMgr_Events
+	{
+		class ComponentFavoriteEvent
+		{
+		public:
+			// members
+			BGSComponent* component;    // 00
+			bool          isFavorited;  // 08
+		};
+		static_assert(sizeof(ComponentFavoriteEvent) == 0x10);
+	}
+}