feat: añadir DTOs de facturas

DoliMiddlewareApi/Dtos/Enums/InvoiceStatus.cs

@@ -0,0 +1,23 @@
+namespace DoliMiddlewareApi.Dtos.Enums;
+
+public enum InvoiceStatus
+{
+    Draft = 0,
+    Validated = 1,
+    Paid = 2,
+    Unknown = 3
+}
+
+public static class InvoiceStatusMapper
+{
+    public static InvoiceStatus FromDolibarrStatus(string status)
+    {
+        return status switch
+        {
+            "0" => InvoiceStatus.Draft,
+            "1" => InvoiceStatus.Validated,
+            "2" => InvoiceStatus.Paid,
+            _ => InvoiceStatus.Unknown
+        };
+    }
+}

DoliMiddlewareApi/Dtos/InvoiceDto.cs

@@ -0,0 +1,18 @@
+using DoliMiddlewareApi.Dtos.Enums;
+
+namespace DoliMiddlewareApi.Dtos;
+
+public class InvoiceDto
+{
+    public int Id { get; set; }
+    public string Number { get; set; }
+    public DateTime? Date { get; set; }
+    public DateTime? ExpireDate { get; set; }
+    public int ClientId { get; set; }
+    public decimal? Total { get; set; }
+    public decimal? RemainToPay { get; set; }
+    public InvoiceStatus Status { get; set; }
+  
+    
+    
+}