docs: add plugin setup guide

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

@@ -0,0 +1,20 @@
+#pragma once
+
+namespace RE
+{
+	class NiAVObject;
+
+	class BSPreCulledObjects
+	{
+	public:
+		class ObjectRecord
+		{
+		public:
+			// members
+			NiAVObject*   obj{ nullptr };  // 00
+			std::uint32_t flags{ 0 };      // 08
+		};
+		static_assert(sizeof(ObjectRecord) == 0x10);
+	};
+	static_assert(std::is_empty_v<BSPreCulledObjects>);
+}