Add simulator to environment monitor lab

[jimbobbennett]

The Environment monitor lab relies on physical hardware. This makes it hard to teach to remote students who may not have access to the same hardware, either due to cost or shipping limitations.

To make this lab easier to run, it should have an alternative to the physical hardware using simulated hardware - essentially a Python app that can be run on the users PC or Mac that simulates random temperature, humidity and sound data, with a way to simulate a sound spike on demand.