NRF24: add MHOC303 and ATC

[Staars]

Description:

• add support for MHO-C303 sensor
• add support for ATC-custom firmware for the LYWSD03MMC
• allow case insensitive input of bind_key and MAC in commands

Checklist:

• The pull request is done against the latest dev branch
• Only relevant files were touched
• Only one feature/fix was added per PR.
• The code change is tested and works on Tasmota core ESP8266 V.2.7.4.1
• The code change is tested and works on core ESP32 V.1.12.2
• I accept the CLA.

NOTE: The code change must pass CI tests. Your PR cannot be merged unless tests pass

[ercoleg]

Thank you!