Add migrated to .NET 8.0 variant of Hcs.Client

Hcs.ClientNet/GostCryptography/Asn1/Ber/Asn1DerEncodeBuffer.cs

@@ -0,0 +1,16 @@
+namespace GostCryptography.Asn1.Ber
+{
+    public class Asn1DerEncodeBuffer : Asn1BerEncodeBuffer
+    {
+        public Asn1DerEncodeBuffer()
+        {
+            ByteIndex = SizeIncrement - 1;
+        }
+
+        public Asn1DerEncodeBuffer(int sizeIncrement)
+            : base(sizeIncrement)
+        {
+            ByteIndex = SizeIncrement - 1;
+        }
+    }
+}