improv(Copy Files and Directories): Allow specifying absolute paths to files...

improv(Copy Files and Directories): Allow specifying absolute paths to files and directories to include in the server pack. Example `C:/`foo/bar` will result in `bar` being copied to the server pack as `bar`, and `C:/`foo/bar.file` will result in `bar.file` being copied to the server pack as `bar.file`.