fix many clones()

src/model/tripdetails.rs

@@ -31,10 +31,10 @@ WHERE id like ?
     /// Creates a new entry in `trip_details` and returns its id.
     pub async fn create(
         db: &SqlitePool,
-        planned_starting_time: String,
+        planned_starting_time: &str,
         max_people: i32,
-        day: String,
-        notes: Option<String>,
+        day: &str,
+        notes: Option<&str>,
         allow_guests: bool,
         trip_type_id: Option<i64>,
     ) -> i64 {