* Lib: new flipper file format library
* Lib: flipper file format cpp wrapper
* Storage: simple function for remove file and check error
* iButton app: remove file worker, use new flipper file format instead
* Dialogs: storage error message
* Storage: simple function for mkdir and check error
* iButton app: error messages
* Libs: update makefile
* RFID app: remove file worker, use new flipper file format instead
* Flipper File: library documentation
Co-authored-by: Aleksandr Kutuzov <alleteam@gmail.com>
