* Added API to get the RGB pixel and brightness values from the blinkt interface.
* Fixed Channel object for Color object present-value which does not use coercion.
* Added API to the color-RGB library to convert from ASCII CSS color name to X,Y and brightness.
* Converted the Blinkt example app to use the basic-server. Added a default color name command line option --color that accepts CSS color names. Set the color and brightness at startup.
* Added vacancy timer for lights using timer object defaulted to 30m and started at startup.
* fixed BACnetXYcolor and BACnetColorCommand encode and decoding and improved unit test coverage. Refactored BACnetXYcolor to/from ascii into lighting module.
* added to the color, color temperature, and lighting output objects a fade/ramp/step engine. Added color and color command coercion into the channel object and enabled color temperature object coercion. Added CreateObject and DeleteObject service handling to the color, color temperature, lighting output, and channel objects.
* added blinkt demo app for Raspberry Pi [WIP]
* updated gitignore to simplify handling of apps folder contents
* fixed piface demo build
* added RaspiOS to pipeline for piface and blinkt! demo builds
* added device object timer function for child object types into example Device object. Refactored device object to increment database revision for create or delete object services. Refactored example app/server to use mstimer library and device child object timers.
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Co-authored-by: Steve Karg <skarg@users.sourceforge.net>
Steve Karg