feat(user): persist the hide completed sets checkbox

[wescopeland]

This PR enhances the "Hide completed sets" checkbox to enable cookie-driven persistence.

Summary of changes:

• "Hide completed sets" has been relabeled to "Hide completed games"
• Upon checking or unchecking the checkbox, a cookie is given a "true" or "false" value.
• This cookie is inspected upon page load, and if set to "true", completed games are given the hidden Tailwind class.
• Some imports and linting rules have slightly been adjusted to take advantage of the @/ import path defined in the tsconfig. This also was conflicting with a linting rule which did not understand tsconfig baseUrl and paths values. This has been remediated by adding eslint-import-resolver-typescript to the eslint import resolver settings.
• toggleUserCompletedSetsVisibility() is no longer being lazy-loaded. It is small enough that lazy loading it hurts performance more than helps it. As a result, I have moved it out of the dynamic folder and into the utils folder.

ref: https://discord.com/channels/310192285306454017/1100897119709179915

This also resolves an issue where some browsers automatically set the checkbox on previous/next navigations, but the checkbox doesn't do anything. That issue should go away as a result of the changes in this PR.