Adding CPU temp examples for template.

Author: kattni

CircuitPython_Templates/cpu_temperature.py

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+"""CircuitPython CPU temperature example in Celsius"""
+import time
+import microcontroller
+
+while True:
+    print(microcontroller.cpu.temperature)
+    time.sleep(0.15)

CircuitPython_Templates/cpu_temperature_f.py

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+"""CircuitPython CPU temperature example in Fahrenheit"""
+import time
+import microcontroller
+
+while True:
+    print(microcontroller.cpu.temperature * (9 / 5) + 32)
+    time.sleep(0.15)