added unicode escape to config strings

cat_win/persistence/config.py

@@ -186,6 +186,7 @@ def save_config(self) -> None:
                 print('\nAborting due to End-of-File character...', file=sys.stderr)
                 return
 
+        value = value.encode().decode('unicode_escape')
         self.config_parser['CONSTS'][keyword] = f'"{value}"'
         try:
             with open(self.config_file, 'w', encoding='utf-8') as conf: