docs: add plugin setup guide

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

@@ -0,0 +1,32 @@
+#pragma once
+
+#include "RE/B/BSResource_FileID.h"
+
+namespace RE::BSResource
+{
+	class ID :
+		public FileID  // 0
+	{
+	public:
+		ID() = default;
+		ID(const ID&) noexcept = default;
+
+		ID(const char* a_path) noexcept
+		{
+			GenerateFromPath(a_path);
+		}
+
+		[[nodiscard]] bool operator==(const ID&) const noexcept = default;
+
+		void GenerateFromPath(const char* a_path)
+		{
+			using func_t = decltype(&ID::GenerateFromPath);
+			static REL::Relocation<func_t> func{ RE::ID::BSResource::ID::GenerateFromPath };
+			return func(this, a_path);
+		}
+
+		// members
+		std::uint32_t dir{ 0 };  // 8
+	};
+	static_assert(sizeof(ID) == 0xC);
+}