Option to automatically move files to archive after packing

[giovmendoza]

In the pack files dialog, it would be nice to add an option/check box to "MOVE" the source files (to be packed) into the archive - zip, exe, etc.
This way the source files will be deleted automatically after packing.
It's recommended to set the default to "DO NOT MOVE" (unchecked) in consideration for the unsuspecting user.