migration commit

lib/models/activity_model.dart

@@ -0,0 +1,20 @@
+import '../classes/activity_action.dart';
+
+class ActivityModel {
+  ActivityModel(
+      {required this.id,
+      required this.title,
+      required this.type,
+      required this.categories,
+      required this.description,
+      required this.actions,
+      this.resources});
+
+  final int id;
+  final String title;
+  final String type;
+  final List<String> categories;
+  final String description;
+  final List<ActivityAction> actions;
+  final List<String>? resources;
+}

lib/models/session_model.dart

@@ -0,0 +1,21 @@
+import 'package:sendtrain/classes/media.dart';
+import 'package:sendtrain/models/activity_model.dart';
+
+class SessionModel {
+  SessionModel(
+      {required this.id,
+      required this.title,
+      required this.content,
+      required this.date,
+      this.activities,
+      this.achievements,
+      this.media});
+
+  final int id;
+  final String title;
+  final String content;
+  final DateTime date;
+  final List<ActivityModel>? activities;
+  final List<String>? achievements;
+  final List<Media>? media;
+}