Add migrated to .NET 8.0 variant of Hcs.Client

Hcs.ClientNet/GostCryptography/Asn1/Ber/IntHolder.cs

@@ -0,0 +1,16 @@
+namespace GostCryptography.Asn1.Ber
+{
+    public class IntHolder
+    {
+        public int Value;
+
+        public IntHolder()
+        {
+        }
+
+        public IntHolder(int value)
+        {
+            Value = value;
+        }
+    }
+}