docs: add plugin setup guide

plugin/lib/commonlibf4/include/RE/B/BSNavmeshEdgeExtraInfo.h

@@ -0,0 +1,17 @@
+#pragma once
+
+#include "RE/B/BSNavmeshTriangleEdgePortal.h"
+
+namespace RE
+{
+	enum class EDGE_EXTRA_INFO_TYPE;
+
+	class BSNavmeshEdgeExtraInfo
+	{
+	public:
+		// members
+		REX::TEnumSet<EDGE_EXTRA_INFO_TYPE, std::int32_t> type;    // 0
+		BSNavmeshTriangleEdgePortal                       portal;  // 4
+	};
+	static_assert(sizeof(BSNavmeshEdgeExtraInfo) == 0xC);
+}