update forced checkin for start point and nearbt start points

lib/pages/destination/destination_controller.dart

@@ -667,6 +667,29 @@ class DestinationController extends GetxController {
     super.onInit();
   }
 
+  int getForcedChckinDistance(Destination dest) {
+    int _retValue = 100;
+    if (dest.cp == -1) {
+      return 500;
+    }
+    Destination? ds;
+    for (Destination d in destinations) {
+      if (d.cp == -1) {
+        ds = d;
+      }
+    }
+    if (ds != null) {
+      var distance = const Distance();
+      double distanceToDest = distance.as(LengthUnit.Meter,
+          LatLng(dest.lat!, dest.lon!), LatLng(ds.lat!, ds.lon!));
+      if (distanceToDest <= 500) {
+        return 500;
+      }
+    }
+
+    return _retValue;
+  }
+
   readUserToken() async {
     final SharedPreferences prefs = await SharedPreferences.getInstance();
     indexController.userToken = prefs.getString("user_token");