WIP code

Builds, but is not yet usable in any way nor is anything tested.

This includes ADC reading, basic RGBLED control, and init code. Still need to do probe, user IO including mode select and settings, RGBLED programs, and more.

include/adc.h

@@ -0,0 +1,10 @@
+
+/*
+ * adc.c: probe, user config, and user IO (switch and button) reading
+ *
+ * file creation: 20231016 0102
+ */
+
+
+void adc_init();
+void adc_next();