[Feature]: Implement Pricing Plan Page UI

Implement the pricing plan page based on the existing Figma design. Ensure the UI components are fully responsive across different screen sizes.

The Pricing Plan page matches the Figma design.
All interactive elements (e.g., buttons, links) should be functional and visually consistent.
The page should be responsive and render correctly on mobile, and desktop devices.

hngprojects / hng_boilerplate_nextjs