fix: hardcore mode fixes (#1882)

fixes hardcore modes uscore drops
adds config option for excluded item drops

dCommon/dConfig.h

@@ -1,5 +1,7 @@
 #pragma once
+
 #include <fstream>
+#include <functional>
 #include <map>
 #include <string>
 
@@ -30,11 +32,14 @@ public:
 	 */
 	void ReloadConfig();
 
+	// Adds a function to be called when the config is (re)loaded
+	void AddConfigHandler(std::function<void()> handler);
 	void LogSettings() const;
 
 private:
 	void ProcessLine(const std::string& line);
 
 	std::map<std::string, std::string> m_ConfigValues;
+	std::vector<std::function<void()>> m_ConfigHandlers;
 	std::string m_ConfigFilePath;
 };