Summary: CryptoJobsList adds a featured job section

Why It Matters: The site is now highlighting specific high-value roles and companies. This change makes certain job listings much more visible than others on the main page.

What Changed:

• Added a "⭐ Featured Opportunity" section that highlights a specific job role in detail.
• Added a "Dark Mode" toggle to the main navigation menu.
• Updated the job list to show 25 jobs at a time with a "Load more jobs" button.
• Changed the "Sort" button text to "Sort Job Filters."
• Added a testimonial from a Marketing Director at Adel.
• Increased the total number of pages in the pagination footer.