Create initial files for Disease Detection Page

lib/data/diseases/disease_detection_model.dart

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+class DetectionModel {}

lib/ui/diseases/diagnosis.dart

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+import 'package:flutter/foundation.dart';
+
+class Diagnosis extends ChangeNotifier {}

lib/ui/diseases/disease_card.dart

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+import 'package:flutter/material.dart';
+
+class DiseaseCard extends StatelessWidget {
+  @override
+  Widget build(BuildContext context) {
+    return Container();
+  }
+}

lib/ui/diseases/disease_card_item.dart

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+class DiseaseCardItem {}

lib/ui/diseases/view_image_region.dart

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+import 'package:flutter/material.dart';
+
+class ViewImageRegion extends StatefulWidget {
+  @override
+  _ViewImageRegionState createState() => _ViewImageRegionState();
+}
+
+class _ViewImageRegionState extends State<ViewImageRegion> {
+  @override
+  Widget build(BuildContext context) {
+    return Container();
+  }
+}