docs: add plugin setup guide

plugin/lib/commonlibf4/include/RE/S/StolenItemValueStruct.h

@@ -0,0 +1,13 @@
+#pragma once
+
+namespace RE
+{
+	class StolenItemValueStruct
+	{
+	public:
+		// members
+		std::uint32_t stolenItemValueNoCrime;  // 0
+		std::uint32_t istolenItemValueCrime;   // 4
+	};
+	static_assert(sizeof(StolenItemValueStruct) == 0x8);
+}