Polykey-Docs: Integrate js-lint

[CDeltakai]

Specification

This issue tracks the integration of the new js-lint package which will replace all current linting elements.

Additional context

Relates to: MatrixAI/js-lint#7

Tasks

1. Integrate js-lint and remove old linting elements
2. Fix any newfound linting errors found by the new linter

[linear]

PRO-266