Added a new branch with added battery status for ORIC firmware

[CIumsy]

Added battery monitoring support via I2C:

• Integrated BQ27546 battery gauge communication (I2C address 0x55)
• Added readBatteryPercentage() function for State of Charge monitoring
• Appended battery data as last byte in data packets (8000→8001 bytes)
• Implemented low battery warning (red NeoPixel blink x3 if ≤10% at startup)
• Optimized battery reads outside ISR to avoid timing delays
• Maintained backward compatibility with existing data structure(timestamp + sample number + 8-channel ADC data + battery byte)