[Enhancement]: Add Success Message to Contact Form

[akshay0611]

Problem: The current contact form lacks feedback for users after they submit their details, which may leave them unsure if their submission was successful.

Proposed Solution:

• Add a success message that appears dynamically after the user submits their details.
• Use JavaScript to handle the form submission and display the success message.

Expected Outcome: A contact form that provides immediate feedback to users, improving their experience and encouraging further engagement.