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* 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>