add notification to all pot. coxes if trip is full

src/model/usertrip.rs

@@ -1,6 +1,11 @@
 use sqlx::SqlitePool;
 
-use super::{notification::Notification, trip::Trip, tripdetails::TripDetails, user::User};
+use super::{
+    notification::Notification,
+    trip::{Trip, TripWithUserAndType},
+    tripdetails::TripDetails,
+    user::User,
+};
 use crate::model::tripdetails::{Action, CoxAtTrip::Yes};
 
 pub struct UserTrip {}
@@ -79,6 +84,8 @@ impl UserTrip {
                 None,
             )
             .await;
+
+            trip_details.check_free_spaces(db).await;
         }
 
         Ok(name_newly_registered_person)