docs: add plugin setup guide

plugin/lib/commonlibf4/include/RE/A/ActorMovementData.h

@@ -0,0 +1,16 @@
+#pragma once
+
+#include "RE/M/MovementData.h"
+#include "RE/M/MovementTweenerOutputData.h"
+
+namespace RE
+{
+	class ActorMovementData
+	{
+	public:
+		// members
+		MovementData              handlerData;  // 00
+		MovementTweenerOutputData tweenerData;  // 30
+	};
+	static_assert(sizeof(ActorMovementData) == 0x50);
+}