[Feature] scoop cleanup: add option for closing running apps to avoid "PermissionDenied" when apps are still running

Feature Request

Is your feature request related to a problem? Please describe.

When you are cleaning old versions that are still running, you will receive "Remove-Item : Cannot remove item" error.

To reproduce this: 1) Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser 2) Invoke-RestMethod -Uri https://get.scoop.sh/ | Invoke-Expression 3) scoop install git 4) scoop bucket add extras 5) scoop install syncthingtray@1.4.13 6) run syncthing tray 7) scoop install syncthingtray@1.5.0 8) scoop cleanup -a -k 9) error:

Remove-Item : Cannot remove item C:\Users\ruruo\scoop\apps\syncthingtray\1.4.13\syncthingtray.exe: Access to the path
'syncthingtray.exe' is denied.
At C:\Users\ruruo\scoop\apps\scoop\current\libexec\scoop-cleanup.ps1:50 char:9
+         Remove-Item $dir -ErrorAction Stop -Recurse -Force
+         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : PermissionDenied: (syncthingtray.exe:FileInfo) [Remove-Item], UnauthorizedAccessExceptio
   n
    + FullyQualifiedErrorId : RemoveFileSystemItemUnAuthorizedAccess,Microsoft.PowerShell.Commands.RemoveItemCommand

Describe the solution you'd like

Add option to scoop cleanup for closing running apps to avoid "PermissionDenied" when apps are still running.

Describe alternatives you've considered

Not having such option.

ScoopInstaller / Scoop