functional activity addition, bug to only remove activity action and date selection need to be fixed

lib/daos/activities_dao.dart

@@ -20,6 +20,13 @@ class ActivitiesDao extends DatabaseAccessor<AppDatabase>
 
   Future remove(Activity activity) => delete(activities).delete(activity);
 
+  Future<List<Activity>> contains(value) async {
+    return (select(activities)
+          ..where((t) =>
+              t.title.contains(value) | t.description.contains(value) | t.category.contains(value)))
+        .get();
+  }
+
   Future<List<Activity>> activitiesFromSession(int id) async {
     final result = select(db.sessionActivities).join(
       [
@@ -46,9 +53,8 @@ class ActivitiesDao extends DatabaseAccessor<AppDatabase>
       ],
     )..where(db.sessionActivities.sessionId.equals(id));
 
-    return query.watch().map((rows){
-      final activities =
-        (rows).map((e) => e.readTable(db.activities)).toList();
+    return query.watch().map((rows) {
+      final activities = (rows).map((e) => e.readTable(db.activities)).toList();
 
       return activities;
     });

lib/daos/session_activities_dao.dart

@@ -7,6 +7,8 @@ part 'session_activities_dao.g.dart';
 class SessionActivitiesDao extends DatabaseAccessor<AppDatabase> with _$SessionActivitiesDaoMixin {
   SessionActivitiesDao(super.db);
 
+  Future createOrUpdate(SessionActivitiesCompanion sessionActivity) => into(sessionActivities).insertOnConflictUpdate(sessionActivity);
+
   Future<List<SessionActivity>> all() async {
     return await select(sessionActivities).get();
   }