feat: add invoice-configs management functionality

internal/models/responses/invoice_config_response.go

@@ -0,0 +1,13 @@
+package responses
+
+type CreateInvoiceConfigResponse struct {
+	ID int64 `json:"id"`
+}
+
+type UpdateInvoiceConfigResponse struct {
+	ID          int64  `json:"id"`
+	Name        string `json:"name"`
+	Type        string `json:"type"`
+	Description string `json:"description"`
+	IsActive    bool   `json:"isActive"`
+}