Add Feedback & Reviews Section Above Footer in homepage

[Renu-code123]

Which issue does this PR close?

Closes #491

Rationale for this change:

• The homepage did not have a Feedback & Reviews section, limiting user interaction and reducing opportunities to collect valuable suggestions.
• Additionally, there was no dedicated Feedback option in the header, making it less intuitive for users to share their experiences.
• Adding this feature improves UX and engagement by giving users a direct way to provide input while ensuring feedback is stored privately (not displayed).

What changes are included in this PR?

• Added a Feedback & Reviews section above the footer that includes:
• Required fields for Name and Email
• Textarea for feedback input
• Submit and Cancel buttons
• Implemented logic to:

1. Save feedback in localStorage (not displayed publicly)
2. Show success message after submission
3. Reset the form automatically
4. Added a Feedback button in the header navigation that scrolls to the Feedback section for quick access.
5. Styled the section and buttons to match the site’s existing dark theme and green accent design.

Are these changes tested?

Verified manually by:

1. Submitting feedback and checking that it is stored in localStorage.
2. Ensuring success message appears and form resets after submission.
3. Confirming Cancel button clears the form.
4. Testing that the header Feedback button scrolls correctly to the section.
   5.⚠️ No automated tests were added since this is primarily a frontend UI enhancement and localStorage-based behavior.

Are there any user-facing changes?
Yes.

• Users now see a Feedback & Reviews section above the footer.
• A new Feedback button is visible in the header navigation.
• On submission, a success message is displayed, enhancing interaction.

Screenshots:

@gyanshankar1708 review and merge this

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[github-actions]

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