create ArchiveCipher table

src/Infrastructure.EntityFramework/Vault/Models/CipherArchive.cs

@@ -0,0 +1,13 @@
+#nullable disable
+
+using Bit.Infrastructure.EntityFramework.Vault.Models;
+
+public class CipherArchive
+{
+    public Guid CipherId { get; set; }
+    public Guid UserId { get; set; }
+    public DateTime ArchivedDate { get; set; }
+
+    // Optional navigation props – you can drop these if you don't want them.
+    public Cipher Cipher { get; set; }
+}