[epicardium] refactor LED to be in own module [MANUAL MERGE]

epicardium/modules/leds.c

+#include "leds.h"
+
+void epic_leds_set(int led, uint8_t r, uint8_t g, uint8_t b)
+{
+	leds_set(led, r, g, b);
+	leds_update();
+}
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