- Added a new endpoint `/work-instruction/bom-base-qty` to retrieve base quantities for items based on their codes.
- Introduced the `getBomBaseQtyMap` function in the `workInstructionController` to handle the logic for fetching base quantities.
- Updated the frontend to call the new API and integrate base quantity mapping into the work instruction registration process.
- Enhanced the work instruction page to calculate batch counts and split quantities based on the retrieved base quantities.
(TASK:ERP-020)
