feat: circle, start and endIcon in components folder for Separation of Concerns (SOC)

components/StartIcon.js

@@ -0,0 +1,8 @@
+import L from "leaflet";
+const startIcon = L.divIcon({
+  className: "custom-start-icon",
+  html: "<div style='background-color:#000000;border-radius:50%;width:10px;height:10px;'></div>", // Rot für den Startpunkt
+  iconSize: [25, 25],
+  iconAnchor: [5, 5],
+});
+export default startIcon;