add syntax highlighting and new article on tag-based permissions

[ccbrown]

What It Does

• Syntax highlighting for code blocks
• Articles polish
• New article on tag-based permissions

[Copilot]

Pull Request Overview

This PR introduces syntax highlighting support and styles adjustments alongside a new article on tag-based permissions. Key changes include:

• Adding a new SyntaxHighlighter component to render code blocks.
• Updating Markdown blockquote styling.
• Enhancing articles with author information and adding a new tag-based permissions article.

Reviewed Changes

Copilot reviewed 11 out of 14 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
frontend/src/components/index.tsx	Export added for the new SyntaxHighlighter component.
frontend/src/components/SyntaxHighlighter.tsx	New component that registers languages and applies syntax highlighting.
frontend/src/components/Markdown.tsx	Updated blockquote styling to use a concise "quote" class.
frontend/src/app/(user-area)/teams/[teamId]/Rules.tsx	Replaced with SyntaxHighlighter for a policy preview.
frontend/src/app/(public-area)/page.tsx	Adjusted layout and spacing for feature links.
frontend/src/app/(public-area)/articles/page.tsx	Added author image display for articles.
frontend/src/app/(public-area)/articles/index.tsx	Included the new article on tag-based permissions with proper metadata.
frontend/src/app/(public-area)/articles/how-to-allow-aws-principals-to-modify-only-resources...	New detailed article describing tag-based permissions implementation.
frontend/src/app/(public-area)/articles/capital-one-data-breach.tsx	Added author information to the article metadata.
frontend/src/app/(public-area)/articles/[slug]/page.tsx	Enhanced article page layout including navigation and author display.

Files not reviewed (3)

• frontend/package-lock.json: Language not supported
• frontend/package.json: Language not supported
• frontend/src/app/globals.css: Language not supported

Comments suppressed due to low confidence (2)

frontend/src/components/SyntaxHighlighter.tsx:10

• [nitpick] Consider updating the 'language' prop type to allow additional languages (e.g. using a string union or extended type) if future syntax support is anticipated.

    language: 'bash' | 'json';

frontend/src/components/Markdown.tsx:32

• [nitpick] Verify that the new 'quote' class applies the intended styling and accessibility standards consistently across different browsers and contexts.

return <blockquote className="quote">{children}</blockquote>;