Add prettier

[adamgibs]

Prettier formatter has been added and JS files have been updated. There is a formatting check in GH actions that fails if any JS files are incorrectly formatted along with two make targets, prettier-check that validates formatting and prettier-write which updates formatting. Formatting rules can be changed in the .prettierrc.yaml file

[oblodgett]

@adamgibs did your editor help with this or did you have to do it by hand? Thats a lot of edits.

[oblodgett]

PS is there a make jslint or uilint or something that can be run via the command line before committing?

[adamgibs]

@oblodgett I've added a Makefile target prettier-write that updates the formatting. I didn't use the editor for code updates, only the command line. Also, you'll need to run npm install or npm ci after pulling the branch locally.