add order at categories

internal/contract/category_contract.go

@@ -10,6 +10,7 @@ type CreateCategoryRequest struct {
 	Name         string                 `json:"name" validate:"required,min=1,max=255"`
 	Description  *string                `json:"description,omitempty"`
 	BusinessType *string                `json:"business_type,omitempty"`
+	Order 		 *int                	`json:"order,omitempty"`
 	Metadata     map[string]interface{} `json:"metadata,omitempty"`
 }
 
@@ -17,6 +18,7 @@ type UpdateCategoryRequest struct {
 	Name         *string                `json:"name,omitempty" validate:"omitempty,min=1,max=255"`
 	Description  *string                `json:"description,omitempty"`
 	BusinessType *string                `json:"business_type,omitempty"`
+	Order 		 *int                	`json:"order,omitempty"`
 	Metadata     map[string]interface{} `json:"metadata,omitempty"`
 }
 
@@ -35,6 +37,7 @@ type CategoryResponse struct {
 	Name           string                 `json:"name"`
 	Description    *string                `json:"description"`
 	BusinessType   string                 `json:"business_type"`
+	Order 		   int                	  `json:"order"`
 	Metadata       map[string]interface{} `json:"metadata"`
 	CreatedAt      time.Time              `json:"created_at"`
 	UpdatedAt      time.Time              `json:"updated_at"`