Fix testing

[glenflorendo]

Description

This PR introduces changes to fix our currently broken tests by modularizing our Jest configuration into separate files, creating testing utilities (we could separate this into another library later), and updating broken tests and code.

Related Issues

Resolves #555

Testing

• Ran testing suites through pnpm test and pnpm nx test @lucky-parking/website.

Checklist

• [x] I have followed all conventions outlined in our documentation.
• [x] I have fully tested my changes and confirmed that all new and existing tests pass.
• [x] I have written meaningful commit messages for all changes.
• [x] I have linted and formatted my changes to follow the code style of this repository.
• [x] I have updated our documentation, accordingly.
• [x] I have checked currently opened pull requests to ensure that there are no pending pull request for the same changes or issues.
• [x] I have confirmed that this pull request fully meets the acceptance criteria for all related issues listed above.

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[glenflorendo]

@gibsonliketheguitar Any feedback before I merge? I'm planning to merge by noon (Pacific) today.