fix: restructure footer into balanced three-column layout

[sheeeuWu]

Description

• Restructured the footer into a balanced three-column layout, reducing overall height and improving space utilization.
• Repositioned "Contact Us" below Resources and "Get the App" below Link.
• Updated the footer logo to match the navbar for consistent branding across the site.
• Standardized spacing, typography, and font family throughout the footer for a consistent appearance.

Fixes #451

Type of change

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

• Local testing

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings or errors
• I have checked that the "DevPath India" branding remains intact

Screenshot

[Aditya948351]

LGTM! Approved. Great work on this.