Added documents in onboard sub-entity operation

Author: armando-rodriguez-cko

src/CheckoutSdk/Accounts/CompanyVerificationType.cs

@@ -0,0 +1,11 @@
+using System.Runtime.Serialization;
+
+namespace Checkout.Accounts
+{
+    public enum CompanyVerificationType
+    {
+        [EnumMember(Value = "incorporation_document")] IncorporationDocument,
+        
+        [EnumMember(Value = "articles_of_association")] ArticlesOfAssociation
+    }
+}

src/CheckoutSdk/Accounts/OnboardEntityRequest.cs

@@ -11,5 +11,7 @@ public class OnboardEntityRequest
         public Company Company { get; set; }
 
         public Individual Individual { get; set; }
+
+        public OnboardSubEntityDocuments Documents { get; set; }
     }
 }

src/CheckoutSdk/Accounts/OnboardEntityResponse.cs

@@ -9,9 +9,9 @@ public class OnboardEntityResponse : Resource
 
         public string Reference { get; set; }
 
-        public Capabilities Capabilities { get; set; }
-
         public OnboardingStatus? Status { get; set; }
+        
+        public Capabilities Capabilities { get; set; }
 
         public IList<RequirementsDue> RequirementsDue { get; set; }
     }

src/CheckoutSdk/Accounts/OnboardSubEntityDocuments.cs

@@ -0,0 +1,11 @@
+namespace Checkout.Accounts
+{
+    public class OnboardSubEntityDocuments
+    {
+        public Document IdentityVerification { get; set; }
+
+        public CompanyVerificationType? CompanyVerification { get; set; }
+
+        public TaxVerificationType? TaxVerification { get; set; }
+    }
+}

src/CheckoutSdk/Accounts/TaxVerificationType.cs

@@ -0,0 +1,9 @@
+using System.Runtime.Serialization;
+
+namespace Checkout.Accounts
+{
+    public enum TaxVerificationType
+    {
+        [EnumMember(Value = "ein_letter")] EinLetter
+    }
+}