docs: add plugin setup guide

plugin/lib/commonlibf4/include/RE/D/DisableHeavyItemsFunc.h

@@ -0,0 +1,15 @@
+#pragma once
+
+namespace RE
+{
+	class DisableHeavyItemsFunc
+	{
+	public:
+		// members
+		float playerCurrEncumbrance;     // 00
+		float playerMaxEncumbrance;      // 04
+		float containerCurrEncumbrance;  // 08
+		float containerMaxEncumbrance;   // 0C
+	};
+	static_assert(sizeof(DisableHeavyItemsFunc) == 0x10);
+}