feat: oss.gg accessibility audit

[Emmarie-Ahtunan]

What does this PR do?

Fixes #2327

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Bug fix recommendations

• [X] Bug fix (non-breaking change which fixes an issue)
• [ ] Chore (refactoring code, technical debt, workflow improvements)
• [ ] Enhancement (small improvements)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change requires a documentation update

How should this be tested?

• Test A
• Test B

Checklist

Required

• [ ] Filled out the "How to test" section in this PR
• [X] Read Contributing Guide
• [ ] Self-reviewed my own code
• [ ] Commented on my code in hard-to-understand areas
• [ ] Ran pnpm build
• [ ] Ran pnpm fmt
• [ ] Checked for warnings, there are none
• [ ] Removed all console.logs
• [ ] Merged the latest changes from main onto my branch with git pull origin main
• [X] My changes don't cause any responsiveness issues

Appreciated

• [X] If a UI change was made: Added a screen recording or screenshots to this PR
• [ ] Updated the Unkey Docs if changes were necessary

Summary by CodeRabbit

• New Features
  • Introduced a new section titled "Side Quest: Accessibility Advocate" for conducting an accessibility audit on app.unkey.com.
  • Established a points system for reporting findings based on severity (50 to 300 points).
  • Added a requirement to submit bug issues with relevant screenshots as proof.
  • Included detailed guidelines for accessibility checks, such as valid ARIA attributes and keyboard accessibility.
  • Added multiple images to illustrate findings or examples related to the accessibility audit.