Add "compact this folder" option to context menu

[Dio141]

would it be possible to add a context menu option to quickly compress a folder, like CompactGUI does?

[Freaky]

Probably after I get around to refactoring stuff.

[FolkSong]

This would be great, and also a decompress option! I like to decompress folders that don't have any significant savings, just to avoid any possible weirdness.