docs: add plugin setup guide

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

@@ -0,0 +1,16 @@
+#pragma once
+
+#include "RE/B/BSNavmeshCoverEdgeBase.h"
+
+namespace RE
+{
+	class BSNavmeshCoverEdge :
+		public BSNavmeshCoverEdgeBase  // 0
+	{
+	public:
+		// members
+		std::uint16_t vertexArray[2];  // 0
+		std::uint32_t data;            // 4
+	};
+	static_assert(sizeof(BSNavmeshCoverEdge) == 0x8);
+}