enhance: rebase move up/down with arrow keys (#1544)

Author: NathanBaulch

src/Views/InteractiveRebase.axaml.cs

@@ -61,6 +61,20 @@ protected override void OnKeyDown(KeyEventArgs e)
             }
             else
             {
+                if (e.KeyModifiers.HasFlag(OperatingSystem.IsMacOS() ? KeyModifiers.Meta : KeyModifiers.Control))
+                {
+                    if (e.Key == Key.Up)
+                    {
+                        vm.MoveItemUp(item);
+                        e.Handled = true;
+                    }
+                    else if (e.Key == Key.Down)
+                    {
+                        vm.MoveItemDown(item);
+                        e.Handled = true;
+                    }
+                }
+
                 base.OnKeyDown(e);
             }
         }