Remove deprecated components from the project

- Delete unused components including About19, Contact21, CTA, Faq7, Feature284, Hero235, Landing, Pricing4, Stats11, and Accordion.
- Clean up the codebase by removing unnecessary files to improve maintainability and reduce clutter.
- Ensure that the removal of these components does not affect the existing functionality of the application.

src/components/ui/webcam-pixel-grid.tsx

@@ -165,6 +165,10 @@ export const WebcamPixelGrid: React.FC<WebcamPixelGridProps> = ({
   // Request camera access
   const requestCameraAccess = useCallback(async () => {
     try {
+      if (!navigator.mediaDevices?.getUserMedia) {
+        throw new Error("Webcam access is not available in this browser");
+      }
+
       const stream = await navigator.mediaDevices.getUserMedia({
         video: {
           width: { ideal: 640 },