feat: Update profile card to reflect personal bio and expertise

[fahimar]

• Updated name to "Fahim Al Rashid" and role to "Full Stack Developer."
• Modified profile description to include current role at Intelsense AI, educational background, and interests in DevOps, Cloud Computing, and Blockchain.
• Updated tech stack to include FastAPI, PostgreSQL, and Redis, and removed irrelevant skills.
• Adjusted "Current Focus" section to highlight API Optimization, Cloud Computing, and Blockchain.
• Kept GitHub stats as placeholders for future updates.
• Improved styling for new skill badges (FastAPI, PostgreSQL, Redis) with gradient backgrounds.
• Ensured responsive design for mobile and desktop views.

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• I have added a screenshot from browser with my changes
• There are no errors in the console
• I had fun going through this tutorial (ノ^o^)ノ and learned on the way ٩(＾◡＾)۶
• There are some things I'd like to improve in this tutorial. I have written them below.