**What**
- Fetches the stock location's details when creating a fulfillment and return fulfillment.
- Passes the data to the fulfillment module, which in turn passes it to the fulfillment provider.
**Why**
- When creating a fulfillment in a multi-location setup the fulfillment provider will need to know where the package is being sent from (so the shipping service can pick it up).
- Previously, we didn't pass anything but the location id to the fulfillment provider. Because the fulfillment provider can't have a dependency on the stock location module this was not sufficient.
- This change ensures there is enough data passed to the fulfillment provider to build integrations properly.
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