Feat[BE-222,223,224]: creating So create delete patch update get getall approval API

internal/entities/sales-orders.go

@@ -14,5 +14,6 @@ type SalesOrders struct {
 	UpdatedAt time.Time      `gorm:"autoUpdateTime"`
 	DeletedAt gorm.DeletedAt `gorm:"index" json:"-"`
 
-	CreatedUser User `gorm:"foreignKey:CreatedBy;references:Id"`
+	CreatedUser    User      `gorm:"foreignKey:CreatedBy;references:Id"`
+	LatestApproval *Approval `gorm:"-" json:"latest_approval,omitempty"`
 }