add cancellation, trip_type and notes to cal export

src/model/tripdetails.rs

@@ -7,6 +7,7 @@ use sqlx::{FromRow, SqlitePool};
 use super::{
     notification::Notification,
     trip::{Trip, TripWithUserAndType},
+    triptype::TripType,
 };
 
 #[derive(FromRow, Debug, Serialize, Deserialize)]
@@ -51,6 +52,13 @@ WHERE id like ?
         .ok()
     }
 
+    pub async fn triptype(&self, db: &SqlitePool) -> Option<TripType> {
+        match self.trip_type_id {
+            None => None,
+            Some(id) => TripType::find_by_id(db, id).await,
+        }
+    }
+
     pub async fn find_by_startingdatetime(
         db: &SqlitePool,
         day: String,