Add basic sct 'night time' wrapper

.bin/dusk

@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+
+max_temperature=6500
+min_temperature=4500
+temperature=$max_temperature
+step_size=100
+
+if [ ! -e "/usr/bin/sct" ]; then echo "sct not found"; exit 1; fi
+
+until [ $temperature -eq $min_temperature ]; do
+    temperature=$((${temperature}-${step_size}))
+    sct "$temperature"
+    sleep 0.5
+done