feat(erp): 添加排序功能支持

- 定义 OrderItem、OrderField 和 OrderSort 类型及常量
- 为费用模块添加 createdAt、amount 排序字段
- 为应付模块添加 createdAt、amount 排序字段
- 为收汇模块添加 createdAt、entryAmount、receivableFxAmount 排序字段
- 为应收模块添加 createdAt、receivedAmount、receivableAmount、outstandingAmount 排序字段
- 为申请模块添加 createdAt、prepaidAmount、amount、paidAmount、payAt 排序字段
- 在各列表参数结构体中添加 Order 字段支持

erp/constant.go

@@ -111,3 +111,40 @@ const (
 	PaymentTypePurchase PaymentType = 1 // 采购付款单
 	PaymentTypeCost     PaymentType = 2 // 费用付款单
 )
+
+type OrderItem struct {
+	Field OrderField
+	Sort  string
+}
+
+type OrderField = string
+
+const (
+	OrderFieldReceivableCreatedAt         OrderField = "createdAt"
+	OrderFieldReceivableReceivedAmount    OrderField = "receivedAmount"
+	OrderFieldReceivableReceivableAmount  OrderField = "receivableAmount"
+	OrderFieldReceivableOutstandingAmount OrderField = "outstandingAmount"
+
+	OrderFieldReceiptCreatedAt          OrderField = "createdAt"
+	OrderFieldReceiptEntryAmount        OrderField = "entryAmount"
+	OrderFieldReceiptReceivableFxAmount OrderField = "receivableFxAmount"
+
+	OrderFieldPayableCreatedAt OrderField = "createdAt"
+	OrderFieldPayableAmount    OrderField = "amount"
+
+	OrderFieldRequestCreatedAt     OrderField = "createdAt"
+	OrderFieldRequestPrepaidAmount OrderField = "prepaidAmount"
+	OrderFieldRequestAmount        OrderField = "amount"
+	OrderFieldRequestPaidAmount    OrderField = "paidAmount"
+	OrderFieldRequestPayAt         OrderField = "payAt"
+
+	OrderFieldExpenseCreatedAt OrderField = "createdAt"
+	OrderFieldExpenseAmount    OrderField = "amount"
+)
+
+type OrderSort = string
+
+const (
+	OrderSortAsc  OrderSort = "asc"
+	OrderSortDesc OrderSort = "desc"
+)