resolves Issue #3042 add archive status to invoice response (#3043)

BTCPayServer.Client/Models/InvoiceData.cs

@@ -63,6 +63,7 @@ namespace BTCPayServer.Client.Models
         public DateTimeOffset CreatedTime { get; set; }
         [JsonProperty(ItemConverterType = typeof(StringEnumConverter))]
         public InvoiceStatus[] AvailableStatusesForManualMarking { get; set; }
+        public bool Archived { get; set; }
     }
     public enum InvoiceStatus
     {

BTCPayServer/Controllers/GreenField/InvoiceController.cs

@@ -412,6 +412,7 @@ namespace BTCPayServer.Controllers.GreenField
                 Status = entity.Status.ToModernStatus(),
                 AdditionalStatus = entity.ExceptionStatus,
                 Currency = entity.Currency,
+                Archived = entity.Archived,
                 Metadata = entity.Metadata.ToJObject(),
                 AvailableStatusesForManualMarking = statuses.ToArray(),
                 Checkout = new CreateInvoiceRequest.CheckoutOptions()

BTCPayServer/wwwroot/swagger/v1/swagger.template.invoices.json

@@ -856,6 +856,10 @@
                                 "items": {
                                     "$ref": "#/components/schemas/InvoiceStatus"
                                 }
+                            },
+                            "archived": {
+                                "type": "boolean",
+                                "description": "true if the invoice is archived"
                             }
                         }
                     }