introduced lookup table for led ring cw

tools/index_luts.py

@@ -0,0 +1,17 @@
+leds = []
+for i in range(3,51):
+    leds.append(i)
+leds_first = leds[0:37]
+leds_first.reverse()
+leds_last = leds[37:48]
+leds_last.reverse()
+leds_yeah = leds_first + leds_last
+print("int lut_ring_cw[48] = {", end="")
+for i in range(0,48):
+    if i < 47:
+        print(leds_yeah[i], end=",")
+    else:
+        print(leds_yeah[i], end="")
+
+print("};", end="")
+print()