Second set of commits for realtime support

src/gtfs/structs.rs

@@ -2,6 +2,7 @@ use std::collections::{HashMap, HashSet};
 use gtfs_structures::{Agency, Calendar, CalendarDate, RawStopTime, RawTrip, Route, Stop};
 use log::error;
 use serde::{Serialize, Deserialize};
+use serde_json::value;
 use zip::result::ZipError;
 
 
@@ -28,6 +29,12 @@ impl From<ZipError> for Error {
     }
 }
 
+impl From<serde_json::Error> for Error {
+    fn from(value: serde_json::Error) -> Self {
+        return Error { _message: value.to_string() }
+    }
+}
+
 
 // This is to store the preferences for the GTFS(-R) side of the code.
 #[derive(Debug, PartialEq, Serialize, Deserialize)]