add supplier attributes

AB.Services/Converter/ContactPersonConverter.cs

@@ -0,0 +1,44 @@
+using AB.Contracts;
+using AB.Domain.Entities;
+
+namespace AB.Services.Converter;
+
+internal static class ContactPersonConverter
+{
+
+    public static ContactPersonDto ConvertToDto(this ContactPerson contactPerson)
+    {
+        var dto = new ContactPersonDto
+        {
+            Salutation = contactPerson.Salutation,
+            Name = contactPerson.Name,
+            Email = contactPerson.Email,
+            PhoneNumer = contactPerson.PhoneNumber,
+            Notes = contactPerson.Notes,
+        };
+        return dto;
+    }
+
+    public static ContactPerson ConvertToBusinessType(this ContactPersonDto dto)
+    {
+        var contactPerson = new ContactPerson
+        {
+            Salutation = dto.Salutation,
+            Name = dto.Name,
+            Email = dto.Email,
+            PhoneNumber = dto.PhoneNumer,
+            Notes = dto.Notes,
+        };
+        return contactPerson;
+    }
+
+    public static List<ContactPerson> ConvertToContactPersonList(this IEnumerable<ContactPersonDto> contactPersons)
+    {
+        return contactPersons.Select(x => x.ConvertToBusinessType()).ToList();
+    }
+
+    public static IEnumerable<ContactPersonDto> ConvertToContactPersonDtoList(this List<ContactPerson> contactPersons)
+    {
+        return contactPersons.Select(x => x.ConvertToDto());
+    }
+}