Added footer in Buy Car Page

[MEHWISH310]

Which issue does this PR close?

• Closes Footer Missing on Buy Used Cars Page #950

Rationale for this change

The Buy Used Cars page did not have a footer, which caused inconsistency in layout and limited navigation compared to other pages of the website. Adding the footer ensures design uniformity, better navigation, and access to important links, contact details, and social media icons.

What changes are included in this PR?

• Added a responsive footer section to the Buy Used Cars page.
• Matched the footer styling, layout, and content with other pages.
• Included essential links, contact information, and social media icons.
• Ensured proper alignment, responsiveness, and dark/light mode compatibility.

Are these changes tested?

Yes, the footer was tested manually to confirm:

• Correct display across devices and screen sizes.
• Functionality of all links and icons.
• Seamless dark/light mode compatibility.

Are there any user-facing changes?

Yes. Users will now see a consistent footer on the Buy Used Cars page, improving navigation, usability, and the overall visual consistency of the website.

[github-actions]

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