Add circuitpython-as7343: AS7343 14-channel spectral sensor driver

[joepardue]

Library submission: circuitpython-as7343

GitHub Repository: https://github.com/joepardue/circuitpython-as7343

Short Description: CircuitPython driver for the AMS AS7343 14-channel spectral sensor.

This library includes:

• as7343.py driver module
• README.rst, LICENSE, setup.py, requirements.txt
• examples/ directory with example scripts
• .github/workflows/build.yml for CI

[joepardue]

Adafruit does not yet have an AS7343 board, but I wanted to use the Pimoroni board with all the great I2C sensors and controls at Adafruit so I wrote this bundle for the community. I've never done this before so there will be problems that I'm happy to help fix.

[tannewt]

Thanks for making this library! Please create a PR to add it to the bundle. There a guide covering how to do this here: https://learn.adafruit.com/creating-and-sharing-a-circuitpython-library