Add unit test infrastructure to the platform

[chelsea-tnc]

Background: This is part 1 of the work to prevent users from creating a duplicate "Archive" section. Before we add this functionality, let's set up some unit test infrastructure to ensure we're building this in a way that scales.

What this PR does:

• Uses the latest version of Jest and adds new dependencies
• Includes instructions for running tests
• Includes a sample test that passes
• Fixes an accessibility bug: the form label was not explicitly assigned to the input element in TinyInputField

What this PR does not do:

• Fix pre-existing tests in hasuraQueriesAndMutations.js. I fixed a minor syntax error, but these tests are failing with the following error: [{"extensions": {"code": "unexpected", "path": "$"}, "message": "Invalid response from authorization hook"}]. I created a new bug to track this issue: #1297 .

How we tested:

• Ran the unit test
• Manually verified instances of TinyInputField in the UI to ensure there were no styling regressions

Note: There are a lot of commits here, I'll squash them before merging to main.

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Name	Status	Preview	Updated
staging-tiny-news-sites	✅ Ready (Inspect)	Visit Preview	Oct 14, 2022 at 8:37PM (UTC)

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[cypress[bot]]

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Test summary

28 • 0 • 0 • 0

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Run details

Project	TNC Front-End
Status	Passed
Commit	35aa97beff ℹ️
Started	Oct 3, 2022 10:55 PM
Ended	Oct 3, 2022 10:59 PM
Duration	03:41 💡
OS	Linux Ubuntu - 20.04
Browser	Firefox 104

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[chelsea-tnc]

@pilar333 this is ready for review now, I synced it up with main to fix the merging conflicts.

[chelsea-tnc]

Conflicts resolved, this is ready for PR.

[chelsea-tnc]

@pdeharo333 not sure if you tried this already, but I'd try running npm install first.

[pdeharo333]

That did work thanks! Sample test passed, and Hasura and queries test in failing as expected.