Display delivery quantity and remaining quantity

Additional column in delivery note item table
“Ordered Qty” - This will be fetched automatically
from the Sales Order and the current quantity
column will show blank. When the user scan the
items, the quantity column will be updated based
on the same. Regarding the partial delivery,
system will auto fetch the pending quantity to the
ordered quantity column. When creating invoice,
system will take the quantity as per the current
workflow