Tidy up train service component, add loading state, convert tiploc to name... etc.

src/lib/locations-object.svelte.ts

@@ -28,6 +28,20 @@ class LocationStore {
 			return loc.t === query || loc.c === query;
 		});
 	}
+
+	getName(code: string | number | null | undefined): ApiLocationFilter.LocationFilterObject | null {
+		try {
+			if (!code) return null;
+
+			const query = String(code).toUpperCase().trim();
+
+			const match = this.data.find((loc) => loc.t === query || loc.c === query);
+			return match ?? null;
+		} catch (e) {
+			console.error('Error finding location object: ', e);
+			return null;
+		}
+	}
 }
 
 export const LOCATIONS = new LocationStore();