Create script to check formatting of titles

[alexisintech]

What does this solve?

Titles that start or end with a backtick (or both) must be wrapped in quotations.

What changed?

Creates a script that checks the formatting of the title of a page. Updates the GH action to run the lint step for PRs.

⚠️ There's currently an incorrect title as an example of how the lint checker fails.

Examples:
❌ title: auth()
✅ title: 'auth()'

❌ title: <SignIn /> component
✅ title: '<SignIn /> component'

Checklist

• I have clicked on "Files changed" and performed a thorough self-review
• I have added the "deploy-preview" label and added the preview link(s) to this PR description
• All existing checks pass