add point finder from args

src/main.rs

@@ -1,9 +1,10 @@
 use anyhow::Result;
 
-use departure::{format_departures, query_server};
+use departure::{format_departures, get_departures_for_station, get_station_name_from_args};
 
 fn main() -> Result<()> {
-    let response = query_server()?;
+    let station_name = get_station_name_from_args()?;
+    let response = get_departures_for_station(station_name)?;
     let formatted = format_departures(response);
     println!("{formatted}");
     Ok(())