feat: update portfolio with new contact form functionality and improved styling

- Removed outdated CV file and replaced with a new image for the profile.
- Implemented a new email service using EmailJS for contact form submissions.
- Enhanced the contact form to handle errors and success messages.
- Updated the About section for grammatical accuracy.
- Modified the Hero component to link to the new CV file and updated GitHub profile link.
- Updated project links to point to the correct GitHub repositories.
- Improved styling for error messages and avatar image with hover effects.

src/components/Hero.tsx

@@ -5,8 +5,8 @@ const Hero = () => {
   const handleDownloadCV = () => {
     // Ici, vous pouvez ajouter le lien vers votre CV
     const link = document.createElement('a');
-    link.href = '/cv-dayron-van-leemput.pdf'; // Ajoutez votre CV dans le dossier public
-    link.download = 'CV-Dayron-Van-Leemput.pdf';
+    link.href = '/Dayron_Van_Leemput_CV.pdf'; // Ajoutez votre CV dans le dossier public
+    link.download = 'Dayron_Van_Leemput_CV.pdf';
     link.click();
   };
 
@@ -85,7 +85,7 @@ const Hero = () => {
             transition={{ duration: 0.8, delay: 1.2 }}
           >
             <motion.a
-              href="https://github.com/dayronvanleemput" // Remplacez par votre profil GitHub
+              href="https://github.com/Dayron-HELHa" // Remplacez par votre profil GitHub
               target="_blank"
               rel="noopener noreferrer"
               className="social-link"
@@ -119,10 +119,11 @@ const Hero = () => {
             whileHover={{ scale: 1.05, rotate: 5 }}
             transition={{ type: "spring", stiffness: 300, damping: 10 }}
           >
-            {/* Vous pouvez remplacer ceci par votre photo */}
-            <div className="avatar-placeholder">
-              <span>DV</span>
-            </div>
+            <img 
+              src="/dvl.jpg" 
+              alt="Dayron Van Leemput - Portrait"
+              className="avatar-image"
+            />
           </motion.div>
         </motion.div>
       </div>