Rgbw-colorspace-converter

Not only a color module, but a growing toy for creating generative color ansi art too :-) See the README and bin scripts for examples.

* Complete the README.md.
* Let the LED art community know this exists.
* Expand on the fun scripts in bin, perhaps add features to allow it to :
** Create avatar images (I'm using a screenshot of a frame from the script as mine, i like it)
** To make this challenging, find a way to do this w/out X11. ugh.
** Enable to run as web service or embedded in a website.

Snapshot of ./bin/run_color_module_RGB_HSV_HEX_demo.py

Deployed pypy release had differing version than GH... attempting to fix.

Overall
Stabilize the release. Code is more or less ready to roll. The 2 'fun' scripts in bin that play with terminal color turn out to be more compelling than I expected :-)

Added
* bash/python linters
* bash/python code formatters (both pre-commit and as GH actions)
* Automated pypy packaging action (being tested with this release....)
* Code tidied up.
* bin/ scripts looking pretty (run one!)