Add all the files

src/config/PermanentConfig.h

@@ -0,0 +1,18 @@
+#pragma once
+
+#include "PermanentStorage.h"
+
+struct PermanentConfig
+{
+	static constexpr const char* kFileName = "perm_setting.xml";
+	
+	std::string custom_mlc_path;
+
+	[[nodiscard]] std::string ToXMLString() const noexcept;
+	static PermanentConfig FromXMLString(std::string_view str) noexcept;
+
+	// gets from permanent storage
+	static PermanentConfig Load();
+	// saves to permanent storage
+	bool Store() noexcept;
+};