The solution framework don't support deployment to the App_GlobalResources folder.
You need to write a SharePoint timerjob that copies the files. A timerjob runs on all servers i the farm, so every server will get the resource files copied.
What you should be aware of is the context (Domain account) you run your timerjob. To start the timerjob you need to use a farm account - the account who runs the web application isn't enough (This includes RunWithElevated...) - long story short - start the timerjob from af Farm feature or a hidden SiteCollection feature (Hidden features runs as the farm account).
Find more inspiration here:
Creating Custom Timer Jobs in Windows SharePoint Services 3.0
SharePoint Resources, Types, Use and Deployment (The link DylanW referred to)