Adding STEMMA Relay code.

Author: kattni

Adafruit_STEMMA_Relay/Adafruit_STEMMA_Relay.py

@@ -0,0 +1,12 @@
+import time
+import board
+import digitalio
+
+relay = digitalio.DigitalInOut(board.A1)
+relay.direction = digitalio.Direction.OUTPUT
+
+while True:
+    relay.value = True
+    time.sleep(1)
+    relay.value = False
+    time.sleep(1)