Modified Extract-SourceGameResourcesWithGCFScape.ps1 to with a check to ensure we don't exit GCFScape too early (before extraction is finished).

The script will now wait for 3 iterations while the number of USER handles (to resources) is at (or lower) than the original number (before we began extraction).

Apparently GuiResources (or the number of handles to them) does differ between machines. :/ It was not a consistent way to verify extraction had completed when running Extract-SourceGameResourcesWithGCFScape.ps1 (extracting VPK contents with GCFScape using keypresses). This has been changed to check if the number of GuiResources has remained the same for X amount of time (5 seconds here), therefore signaling extraction has finished (or hung -- but that shouldn't happen).