Expose service methods to get pickup points

[bjarnef]

I think it would be great it the shipping provider exposed a service to get pickup points based on product code and carrier code, which can be used to list pickup points in checkout if customer not choose delivery at private or business address.

For previously knowledge if should request pickup_points endpoint and is able to list closest by zip code / city.. futhermore a specific pickup point by id.
https://app.shipmondo.com/api/public/v3/specification#/operations/pickup_points_get

Also notice there are some service codes which can be used like EMAIL_NT and SMS_NT to get notifications when creating the shipment https://app.shipmondo.com/api/public/v3/specification#/operations/shipments_post
This will mainly be handled in a (webhook) notification after order is finalized, but it would be a different service method.

Developers can of course handle this themselves, but I guess it makes sense to include these service methods as the client is already there and if using Shipmondo often the pickup points need to be listed in checkout + shipment created after order has been placed (it can be created manually in Shipmondo portal, but this would ensure the shipment / package label is already created and less work for webshop owners).