added some code

wrote some code to test some functionallity

src/client_backend/permissions.h

@@ -0,0 +1,14 @@
+#pragma once
+#include <windows.h>
+#include <sddl.h>
+#include <iostream>
+#include <filesystem>
+#include <fstream>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <io.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+int protect_file(char* path);
+int unprotect_file(char* path);