npm install, build, and lint

test(e2e): use `@openmct/e2e` package as base e2e framework #945

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Run time

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Job	Run time
lint	27s
build (20.x, latest)	2m 27s
build (20.x, stable)	26s
build (18.x, latest)	2m 36s
build (18.x, stable)	27s
	6m 23s