(BE-58,,59): extend db schema & build stock transfer api

- Extend DB schema for stock transfers
- Build stock transfer API (create,)

internal/modules/inventory/route.go

@@ -9,6 +9,7 @@ import (
 
 	productWarehouses "gitlab.com/mbugroup/lti-api.git/internal/modules/inventory/product-warehouses"
 	adjustments "gitlab.com/mbugroup/lti-api.git/internal/modules/inventory/adjustments"
+	transfers "gitlab.com/mbugroup/lti-api.git/internal/modules/inventory/transfers"
 	// MODULE IMPORTS
 )
 
@@ -19,6 +20,7 @@ func RegisterRoutes(router fiber.Router, db *gorm.DB, validate *validator.Valida
 		productWarehouses.ProductWarehouseModule{},
 
 		adjustments.AdjustmentModule{},
+		transfers.TransferModule{},
 		// MODULE REGISTRY
 	}