feat(BE-59,60,61): build stock transfer API with validation and audit log

- Implement CreateOne for stock transfer with multi-delivery and validation
- Preload warehouse, location, and area relations in transfer response
- Add audit log for transfer
- Improve transaction handling and error management

internal/modules/inventory/transfers/controllers/transfer.controller.go

@@ -1,6 +1,7 @@
 package controller
 
 import (
+	"encoding/json"
 	"math"
 	"strconv"
 
@@ -72,11 +73,21 @@ func (u *TransferController) GetOne(c *fiber.Ctx) error {
 }
 
 func (u *TransferController) CreateOne(c *fiber.Ctx) error {
+	data := c.FormValue("data")
+
 	var req validation.TransferRequest
-	if err := c.BodyParser(&req); err != nil {
+	if err := json.Unmarshal([]byte(data), &req); err != nil {
 		return fiber.NewError(fiber.StatusBadRequest, "Invalid request body")
 	}
 
+	// ambil file
+	form, err := c.MultipartForm()
+	if err != nil {
+		return fiber.NewError(fiber.StatusBadRequest, "Invalid multipart form")
+	}
+	_ = form.File["documents"]
+	// todo: tunggu ada aws baru proses
+
 	result, err := u.TransferService.CreateOne(c, &req)
 	if err != nil {
 		return err