Xonotic should not install in Program Files

Hi tonigellida,
thanks for making a package for Xonotic. But it’s better to not copy the game files into the Program Files folder.
There is a well explained article in the Chocolatey Wiki why it is better to copy the files of a program into C:\<somefolder> directly: https://github.com/chocolatey/chocolatey/wiki/DefaultChocolateyInstallReasoning

By the way, your actual package returns an error, because the Program Files folder is only writable with administrative privileges.