Revert "Rename everything filcnaplo-related to refilc"

This reverts commit d1a9625d93.

filcnaplo_kreta_api/lib/models/group_average.dart

@@ -0,0 +1,19 @@
+import 'package:filcnaplo_kreta_api/models/subject.dart';
+
+class GroupAverage {
+  String uid;
+  double average;
+  Subject subject;
+  Map json;
+
+  GroupAverage({required this.uid, required this.average, required this.subject, this.json = const {}});
+
+  factory GroupAverage.fromJson(Map json) {
+    return GroupAverage(
+      uid: json["Uid"] ?? "",
+      average: json["OsztalyCsoportAtlag"] ?? 0,
+      subject: Subject.fromJson(json["Tantargy"] ?? {}),
+      json: json,
+    );
+  }
+}