begin switch to WSTO architecture

src/main/java/de/pnreichmuth/timekeep_backend/wsto/StationWSTO.java

@@ -0,0 +1,28 @@
+package de.pnreichmuth.timekeep_backend.wsto;
+
+import de.pnreichmuth.timekeep_backend.entities.Station;
+
+import java.util.Objects;
+
+public record StationWSTO(
+        String name,
+        String locationName
+) {
+    public StationWSTO{
+        Objects.requireNonNull(locationName, "Station has to have a location");
+    }
+
+    public static StationWSTO of(Station station){
+        return new StationWSTO(
+                station.getName(),
+                station.getLocation()
+        );
+    }
+
+    public static Station toEntity(StationWSTO stationWSTO){
+        return new Station(
+                stationWSTO.name(),
+                stationWSTO.locationName()
+        );
+    }
+}