feature: Add a way to move a window (group) to another activity.
Moving a window to another activity is a pretty frequently performed action, but currently there's no direct way to do it. You have to perform a two step process: Use the "Show in activity" section of the task manager context menu to check the activity that you want to move the window to, then reopen it and uncheck the current activity.
This is not the most convenient or intuitive user experience, so I propose to add a way to move a window to a new activity. The simplest way would be to add another submenu, "Move to activity", to the context menu. It would be analogous to the "Show in activity" submenu but with a radio of activities instead of checkboxes.
What do you think?