Entry history delete and restore work

ModernKeePass.Application/Entry/Commands/DeleteHistory/DeleteHistoryCommand.cs

@@ -0,0 +1,29 @@
+using MediatR;
+using ModernKeePass.Application.Common.Interfaces;
+using ModernKeePass.Domain.Exceptions;
+
+namespace ModernKeePass.Application.Entry.Commands.DeleteHistory
+{
+    public class DeleteHistoryCommand : IRequest
+    {
+        public string EntryId { get; set; }
+        public int HistoryIndex { get; set; }
+
+        public class DeleteHistoryCommandHandler : IRequestHandler<DeleteHistoryCommand>
+        {
+            private readonly IDatabaseProxy _database;
+
+            public DeleteHistoryCommandHandler(IDatabaseProxy database)
+            {
+                _database = database;
+            }
+
+            public void Handle(DeleteHistoryCommand message)
+            {
+                if (!_database.IsOpen) throw new DatabaseClosedException();
+
+                _database.DeleteHistory(message.EntryId, message.HistoryIndex);
+            }
+        }
+    }
+}