chnages has been made for the interactive face camera

lib/presentation/face/face_feedback.dart

@@ -0,0 +1,28 @@
+import 'package:flutter/material.dart';
+
+enum FaceHintType {
+  noFace,
+  tooDark,
+  tooClose,
+  tooFar,
+  notCentered,
+  lookStraight,
+  holdStill,
+  good,
+}
+
+class FaceFeedback {
+  final FaceHintType type;
+  final String message;
+  final double quality; // 0..1 (used for progress ring)
+  final Color borderColor;
+
+  FaceFeedback({
+    required this.type,
+    required this.message,
+    required this.quality,
+    required this.borderColor,
+  });
+
+  bool get isGood => type == FaceHintType.good;
+}