[blog-website] Add Modern UI Components to Landing Page

The blog landing page looks minimal and needs better content hierarchy. Adding Bento-style cards and sections will improve discoverability and structure.

**Expectations:**
- Add “Featured Posts” section with highlighted blogs. Make cards preferably in bento style or any other modenr style cards that has a good user interface as well as a very pleasant user experience.
- Add “Latest Posts” section with a card grid or list view.
- Use Bento card layouts (as seen in modern SaaS sites).
- Cards should include: blog image, title, short description, author, and read time.
- Use Tailwind + UI libraries (shadcn/ui cards, Aceternity components).

**Acceptance Criteria:**
- Homepage displays “Featured Posts” and “Latest Posts”.
- Cards are responsive and styled properly.
- Clear information hierarchy (easy to browse).
- Works smoothly on desktop & mobile.

**Links:**
- Blog Website: https://keploy.io/blog
- Blog Website Repi: https://github.com/keploy/blog-website