User Question Buttons

[Spudmn]

This is an update to the user.prompt.
It allows up to 3 optional buttons to be displayed. The button text is returned when clicked.
A typical example.
sAnswewr = user.prompt('Is the LED on?',text_input=False,button_1_text="Yes",button_2_text="No",button_3_text="Cancel") Will ask the question 'Is the LED on?' and the user can click "Yes", "No" or "Cancel"

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This change is 

[mbenabda]

Hi there,

I'm interested in more versatile user inputs as well

Using a jsonschema form description would support more use cases, including this one.

That work has already been done in the spintop-openhtf distribution, that seems not to be under active development anymore
Maybe it would be worth integrating instead of reimplementing ?

Their implementation however has the caveats of not being api-compatible with the current UserInput plug, and breaking the console I/O, so maybe integrate as a FormInputPlug instead

Frontend:
https://gitlab.com/tackv/spintop-openhtf/-/blob/master/src/openhtf/output/web_gui/src/app/plugs/user-input-plug.component.scss
https://gitlab.com/tackv/spintop-openhtf/-/blob/master/src/openhtf/output/web_gui/src/app/plugs/user-input-plug.component.html
https://gitlab.com/tackv/spintop-openhtf/-/blob/master/src/openhtf/output/web_gui/src/app/plugs/user-input-plug.component.ts

Backend:
https://gitlab.com/tackv/spintop-openhtf/-/blob/master/src/openhtf/plugs/user_input.py