Option picker for Masking Patient values

[julianxcarter]

This PR introduces a picker for the mask constructorArg within the patientExtractor config section of the Config Editor. Though they're not currently functional, the mask values that will soon be added to the MEF are included options as well.

[Dtphelan1]

DP1 - We could probably update the MEF version now 😄

[Dtphelan1]

DP2 - Needs a rebase

[Dtphelan1]

DP3 - Small thing, but I noticed that if you click on the label of a checkbox (e.g. the text-label telecom next to the checkbox) it alternates the checked-value for the wrong field. After doing some digging, I learned that providing an id prop to the Form.Check component will solve this issue (see react-bootstrap/react-bootstrap#4056 (comment)).

tl;dr let's add an id prop to the Form.Check component that's identical with the key prop.

[Dtphelan1]

Other than that this looks good to me! We do a lot of extraneous state-management in this component, and we could probably do away with some/most of it; but that's not introduced by this PR and should be evaluated independently. I'll make a task for that 😄

[Dtphelan1]

I think this looks good – great work Julian!