Implement Footer section for landing page with responsive design

[dDevAhmed]

closes #30

Description

This PR introduces the Footer section for the landing page, ensuring it adheres to the provided design specifications. The Footer is fully responsive and includes the following sections:

• Brand: Logo, title, and tagline.
• Platform Links: Links to "How it works," "Projects," and "About."
• Legal Links: Links to "Privacy," "Terms," and "Contact."
• Connect Links: Links to "Twitter," "Discord," and "GitHub."
• Copyright Notice: Centered text at the bottom.

Changes Made

• Added a new Footer component in Footer.tsx.
• Integrated the Footer component into the HomePage layout in page.tsx.
• Fixed import issues with lucide-react icons (Github and Disc).

Acceptance Criteria

• Pixel-perfect design matching the mockup.
• Fully responsive across desktop, tablet, and mobile breakpoints.
• Properly styled with Tailwind CSS.
• No build or runtime errors.

Testing

• Verified the layout and responsiveness manually.
• Ensured the build process completes successfully without errors.