Enhance Flutter App with Live Image Capture Verification

Implement a live image capture validation feature in an existing Flutter application using a reliable pub.dev package. The task involves enhancing the `face.dart’ file to include live interactions like smiling, nodding, and blinking to authenticate the user. The updated `face.dart' file should then return a base64 string of the image, which will be saved to the server. The primary goal is to ensure that the image captured is from a live user to enhance security measures.