Mih File Structure enhancement

Frontend/lib/mih_objects/files.dart

@@ -0,0 +1,25 @@
+class PFile {
+  final int idpatient_files;
+  final String file_path;
+  final String file_name;
+  final String insert_date;
+  final String app_id;
+
+  const PFile(
+    this.idpatient_files,
+    this.file_path,
+    this.file_name,
+    this.insert_date,
+    this.app_id,
+  );
+
+  factory PFile.fromJson(dynamic json) {
+    return PFile(
+      json['idpatient_files'],
+      json['file_path'],
+      json['file_name'],
+      json['insert_date'],
+      json['app_id'],
+    );
+  }
+}