fix: add icons to html head

[devksingh4]

Summary by CodeRabbit

• New Features
  • Added Apple touch icon support for iOS devices to improve app appearance when bookmarked.
  • Implemented multiple favicon sizes optimized for different browsers and devices for consistent app presentation.
  • Integrated web app manifest configuration for enhanced app identification and seamless installation on home screens across platforms.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

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Walkthrough

The change adds four metadata link elements to the head section of src/components/HeadMetadata.astro. These additions include links for an apple-touch-icon (180x180), favicon-32x32 (32x32 PNG), favicon-16x16 (16x16 PNG), and a site.webmanifest file. The elements are inserted after the og:title meta tag. No logic modifications, error handling, or public API changes are present.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

🚥 Pre-merge checks | ✅ 4

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'fix: add icons to html head' accurately describes the main change: adding favicon and apple-touch-icon elements to the HTML head section.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Merge Conflict Detection	✅ Passed	✅ No merge conflicts detected when merging into main

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch fix-favicon

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[github-actions]

Deploying with Cloudflare Pages

Name	Result
Last commit:	59aaf95
Preview URL:	https://bc8bc68e.acmuiuc.pages.dev
Branch Preview URL:	https://fix-favicon.acmuiuc.pages.dev