docs: add plugin setup guide

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

@@ -0,0 +1,18 @@
+#pragma once
+
+#include "RE/N/NiPoint3.h"
+
+namespace RE
+{
+	class ActorMotionFeedbackData
+	{
+	public:
+		// members
+		NiPoint3 desiredWorldDelta;  // 00
+		NiPoint3 actualWorldDelta;   // 0C
+		float    previousSpeed;      // 18
+		float    previousDirection;  // 1C
+		float    currentHeading;     // 20
+	};
+	static_assert(sizeof(ActorMotionFeedbackData) == 0x24);
+}