chore: UI/UX improvements, accessibility fixes, and responsive updates

[ZL-Asica]

This PR encapsulates multiple changes that improve the user experience, theme toggle functionality, accessibility, and SEO.

• Social Media Links: Fixed an issue where some links were not displaying correctly even when set.
• SEO Enhancements: Added more diverse icons for better compatibility and fixed issues in the manifest file.
• Theme Toggle: Implemented a button to toggle between light and dark modes with preferences stored in localStorage.
• Home Page UI: Addressed UI issues for small screen devices to improve responsiveness.
• ARIA Improvements: Enhanced accessibility by enlarging footer text, and removing hidden icons.
• Markdown Support: Fixed image display issues in posts and ensured better responsiveness for embedded content.
• Dependencies: Bumped up package versions and added a debounce function for the table of contents (TOC).

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Name	Status	Preview	Comments	Updated (UTC)
suzu-blog	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Dec 1, 2024 1:01am