QRCode scanner bounding box

This component uses `expo-camera` to scan QR codes in real time and leverages `react-native-reanimated` to animate the bounding box that highlights detected codes on screen. The bounding box appears and moves smoothly using Reanimated's layout animations, enhancing the visual feedback for users.When a QR code is detected, the bounding box is dynamically rendered and animated into view. If no QR code is detected, the component gracefully hides the bounding box, either through animation or by not rendering it at all, depending on the state.This approach ensures a responsive and visually polished scanning experience, with minimal flicker or jank during detection transitions.