public void BackupOldFormatFiles()
{
var backupFolderPath = $"{proj.BaseDirectory.FullPath.ParentDirectory}/mutatio_backup";
// Create backup directory
FileService.CreateDirectory(backupFolderPath);
// Backup current .xproj
var projFilePath = proj.GetProjFilePath();
FileService.CopyFile(projFilePath, $"{backupFolderPath}/{proj.Name}.{proj.GetProjFileExtension()}");
// Backup packages.config
var packagesConfigFilePath = proj.GetPackagesJsonFilePath();
FileService.CopyFile(packagesConfigFilePath, $"{backupFolderPath}/packages.config");
// Backup AssemblyInfo.x
FileService.CopyDirectory(proj.GetPropertiesDirPath(), $"{backupFolderPath}/Properties");
}
