temp: Add license

Misc/Temp-Monitor/README.md

@@ -27,3 +27,6 @@ mpremote cp main.py :
 Replug the Pico USB cable and data should be sent in over serial.
 
 To monitor, we are currently using the [`serial-monitor-rust`](https://github.com/hacknus/serial-monitor-rust) tool.
+
+### License
+All code in this directory is licensed under the [`MIT`](https://opensource.org/license/MIT) license.

Misc/Temp-Monitor/temperature_monitor.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 import math
 import time
 from cs1237 import CS1237