PiLED v4 with OpenRGB support

What's Changed

• OpenRGB support by @PolisanTheEasyNick in #3

Full Changelog: v4...v4-orgb

v4

What's Changed

• Added CI
• Added basic color changes
• Added PULSE and FADE animations
• Described protocol at README.md

New Contributors

• @PolisanTheEasyNick made their first contribution in #1

Full Changelog: https://github.com/PolisanTheEasyNick/PiLED/commits/v4