Resolve CIT-2 "12.0 create lat long"

Closes CIT-2 Please check if want to display the new fields in that view. I really cant figure where to display the lon and lat.

models/stock_warehouse.py

@@ -11,8 +11,8 @@ class CitruxWarehouseLocation(models.Model):
 
     @api.constrains("latitude", "longitude")
     def _check_for_valid_coordinates(self):
-        if not -90 >= self.latitude <= 90:
+        if not -90 <= self.latitude <= 90:
             raise exceptions.ValidationError("Latitude value must be between -90 and 90")
 
-        if not -180 >= self.longitude <= 180:
+        if not -180 <= self.longitude <= 180:
             raise exceptions.ValidationError("Longitude value must be between -180 and 180")