Python matplotlib display with WSL and VcXsrv

[callumhauber]

I did a few different things, but here are the steps I think are required to make it work:

1. Make sure VcXsrv is installed and working
2. Install Tk backend with sudo apt install python3-tk
3. Add these lines to the python program

import matplotlib
matplotlib.use("TkAgg")

4. Possibly also install these (might only be specific to lab 6 stuff):
   sudo apt-get install python3-pil python3-pil.imagetk