docs: add plugin setup guide

plugin/lib/commonlibf4/include/RE/L/LOCK_LEVEL.h

@@ -0,0 +1,18 @@
+#pragma once
+
+namespace RE
+{
+	enum class LOCK_LEVEL : std::int32_t
+	{
+		kUnlocked = static_cast<std::underlying_type_t<LOCK_LEVEL>>(-1),
+		kEasy = 0x0,
+		kAverage = 0x1,
+		kHard = 0x2,
+		kVeryHard = 0x3,
+		kRequiresKey = 0x4,
+		kInaccessible = 0x5,
+		kTerminal = 0x6,
+		kBarred = 0x7,
+		kChained = 0x8,
+	};
+}