docs: add plugin setup guide

plugin/lib/commonlibf4/include/RE/M/MovementTweenerOutputData.h

@@ -0,0 +1,15 @@
+#pragma once
+
+#include "RE/N/NiPoint3.h"
+
+namespace RE
+{
+	class MovementTweenerOutputData
+	{
+	public:
+		// members
+		NiPoint3 velocity;       // 00
+		NiPoint3 rotationSpeed;  // 0C
+	};
+	static_assert(sizeof(MovementTweenerOutputData) == 0x18);
+}