applets/interactive-test.py needs prompt_toolkit package

[jeremyherbert]

Hi,

In the docs it says to run applets/interactive-test.py to test LUNA, but this file relies on the prompt_toolkit package which is not listed in the pyproject.toml in the normal dependencies section. pip install prompt_toolkit fixes the issue.

Feel free to close this as wont-fix if you understandably don't want to add the extra dependency, but it might be good to add to the docs that you need to install the package anyway.

[martinling]

This is actually an Apollo bug, and I've opened greatscottgadgets/apollo#35 to track it.

Closing it here on the LUNA side.