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- Removed outdated CV file and replaced with a new image for the profile.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/styles/components/_contact.scss

@@ -138,6 +138,19 @@
       font-weight: 500;
     }
 
+    .error-message {
+      display: flex;
+      align-items: center;
+      gap: 12px;
+      background: #ff4757;
+      color: white;
+      padding: 16px;
+      border-radius: $border-radius;
+      margin-bottom: 24px;
+      font-weight: 500;
+      border: 1px solid #ff3838;
+    }
+
     .contact-form {
       display: flex;
       flex-direction: column;