Inbound Shipments

[x] Start off by creating a new Inbound Shipment.
[x] When status is New, the item quantity under Catalogue -> Items & Inventory -> View Stock is not updated. Deleting a batch from New inbound shipment will not update the stock levels either.
[x] When status is updated to Delivered, the item quantity under Catalogue -> Items is updated. Inventory -> View Stock will now show an extra line with the batch number you just added, and the Pack Qty should match the quantity you entered previously. If you are entering multiple batches of the same item, then 2 separate lines will show, now one with the combined quantity.
[x] Deleting a batch from Delivered inbound shipment should update the quantity under Catalogue -> Items. Inventory -> View Stock will be updated also - if one batch is deleted, then just that specific line will be removed.
[x] Back to adding the items -> Ledger should update the quantity with Type set to Inbound Shipment
[x] Changing the status to Verified should not have any impact on the stock levels.

Outbound Shipments

[x] Start off by creating a new Outbound Shipment.
[ ] When entering a new Outbound Shipment, you will select an item and quantity you want to issue - for example, 20 packs of 1 tablet each. At this point, Outbound Shipment is still in New and is not affecting any stock levels. Deleting a batch from New outbound shipment will not update the stock levels either.
[ ] When pressing Confirm Allocated, it will change the item quantity under Catalogue -> Items, but will not change it under Inventory -> View Stock. Ledger will not have any updates at this stage either. Deleting an item/batch will reverse any changes done to Catalogue -> Items - e.g. the item should return back to the original quantity.
[ ] Confirm Picked -> the item quantity under Catalogue -> Items stays the same, and Inventory -> View Stock quantity has now changed. Ledger will be updated with the Outbound Shipment's details and the quantity will be displayed as something like '-20'.
[ ] Confirm Shipped/Delivered/Verified do not have any further changes on the stock levels.