docs: add plugin setup guide

plugin/lib/commonlibf4/include/RE/H/hkQsTransformf.h

@@ -0,0 +1,19 @@
+#pragma once
+
+#include "RE/H/hkQuaternion.h"
+#include "RE/H/hkVector4.h"
+
+namespace RE
+{
+	class hkQsTransformf
+	{
+	public:
+		// members
+		hkVector4f    m_translation;  // 0x00
+		hkQuaternionf m_rotation;     // 0x10
+		hkVector4f    m_scale;        // 0x20
+	};
+	static_assert(sizeof(hkQsTransformf) == 0x30);
+
+	using hkQsTransform = hkQsTransformf;
+}