Initial Release

First release of the driver. If it fully functional and supports all features of the Sensiron SCD41 sensor.

It was built using VSCode, with Platform.IO, and the CH32FUN framework and the LIB_I2C extension. It implements new I2C capabilities, including the 2 byte command/read sequence/write sequence I2C protocol that the SDC uses. It has full support for CRC checking (of both reads and writes) and is tested on the Windows platform with a WCH CH32V003 development board and a Sensiron SCD41 breakout board.