docs: add plugin setup guide

plugin/lib/commonlibf4/include/RE/P/PlayerCharacterQuestEvent.h

@@ -0,0 +1,27 @@
+#pragma once
+
+namespace RE
+{
+	class BGSInstancedQuestObjective;
+
+	namespace PlayerCharacterQuestEvent
+	{
+		enum Type : std::int32_t
+		{
+			kAddObjective = 0x0,
+			kUpdateObjective = 0x1,
+			kRemoveQuest = 0x2,
+			kRemoveQuestTarget = 0x3,
+			kUpdateQuestTarget = 0x4
+		};
+
+		class Event
+		{
+		public:
+			// members
+			PlayerCharacterQuestEvent::Type changeType;      // 00
+			BGSInstancedQuestObjective*     questObjective;  // 08
+		};
+		static_assert(sizeof(Event) == 0x10);
+	}
+}