Added the option to close DB without saving

Changed the way recent files are retrieved
Stopped showing the DB Closed exception on suspend
Reordering entries works
Moved code from infra to application
Cleanup

ModernKeePass.Application/Group/Commands/MoveEntry/MoveEntryCommand.cs

@@ -0,0 +1,34 @@
+using System.Threading.Tasks;
+using MediatR;
+using ModernKeePass.Application.Common.Interfaces;
+using ModernKeePass.Application.Entry.Models;
+using ModernKeePass.Application.Group.Models;
+using ModernKeePass.Domain.Exceptions;
+
+namespace ModernKeePass.Application.Group.Commands.MoveEntry
+{
+    public class MoveEntryCommand : IRequest
+    {
+        public GroupVm ParentGroup { get; set; }
+        public EntryVm Entry { get; set; }
+        public int Index { get; set; }
+
+        public class MoveEntryCommandHandler : IAsyncRequestHandler<MoveEntryCommand>
+        {
+            private readonly IDatabaseProxy _database;
+
+            public MoveEntryCommandHandler(IDatabaseProxy database)
+            {
+                _database = database;
+            }
+
+            public async Task Handle(MoveEntryCommand message)
+            {
+                if (!_database.IsOpen) throw new DatabaseClosedException();
+
+                await _database.MoveEntry(message.ParentGroup.Id, message.Entry.Id, message.Index);
+                message.ParentGroup.Entries.Insert(message.Index, message.Entry);
+            }
+        }
+    }
+}