headless fixes (#107), added some serial cmds (#64), initial encrypted files support

[eadmaster]

changes:

• renamed config file as "/bruce.conf"'
• added GIT_COMMIT_HASH var
• added serial cmds: storage, uptime, settings, date, crypto
• added timeout to subghz rx and ir rx in headless mode
• added shortctut to generate QR codes from any small file (<3Kb)
• initial aes encrypted files support (A few requests #123) - still wip

[IncursioHack]

Hello!
Is there any possibility of using the ATECC608B-TNGTLSU-G in the future to use the cryptographic standard?

ATECC608B-TNGTLSU-G

• I2C communication interface
• Protective cover for extra stability and reliability
• Protected storage of up to 16 keys, certificates or data
• Data storage/locking
• Random number generator
• Preset certificates and keys
• 72bit unique serial number
• Supported algorithm types | ECC-P256 (ECDH and ECDSA), SHA256, AES128-GCM

https://github.com/espressif/esp-cryptoauthlib/blob/master/esp_cryptoauth_utility/README.md

https://github.com/sparkfun/SparkFun_ATECCX08A_Arduino_Library

[eadmaster]

@IncursioHack : the esp32 chip already has hardware support for aes, i'd like to avoid features that requires additional modules.