test: set up chromatic config and get storybook building

[codeincontext]

This is the first step of getting visual regression testing going. There will be follow up work to add more test cases and tweak the setup, so the goal of the PR is to find a good starting point

Description

• Remove unused providers for now
  • This fixes a lookup-on-undefined error related to a "text-primary" key. The error was only present when building storybook rather than opening in dev mode
  • When we add more stories we can evaluate the correct providers to use in the global decorator vs on a per-story basis. For example, we will need to mock some providers with setup state
• Add chromatic configuration
• Remove ChatUserAccessCheck. It had a story but we don't actually use it any more
• Add chromatic github workflow
• Only run chromatic in CI when files in apps/nextjs have changed

How to test

You'll see some new checks on this PR:

• Storybook publish: This is the hosted storybook
• UI tests: These will flag up UI changes so the developer can find bugs
• UI review: This is for designers, owners, and QAs to quickly review the UI changes in the PR and approve them. It's an optional feature and we can decide whether it works for us

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Name	Status	Preview	Comments	Updated (UTC)
oak-ai-lesson-assistant	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 7, 2024 5:31pm

[github-actions]

Playwright test results

 14 passed
 1 skipped

Details

 Open report ↗︎
 15 tests across 14 suites
 1 minute, 51 seconds
 f355a23

Skipped tests

No persona › tests/auth.test.ts › authenticate through Clerk UI

[codeincontext]

One of these providers was causing an error looking up text-primary. For the time being, it looks like none of our current stories need them

As we add more stories, we can decide which providers should be global and which should be defined by the story itself. For example, I expect that SidebarProvider is only used for sidebar components. Or DemoProvider might need to be mocked to test components in different states

[stefl]

Great stuff! Excited to get this in

[sonarqubecloud]

Quality Gate passed

Issues
2 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[oak-machine-user]

🎉 This PR is included in version 1.14.2 🎉

The release is available on GitHub release

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