NoGUI build (for Linux)

[Skippern]

I would like to make a no-gui build on linux to automate some of the functions in CFSM, mainly to organize (rename) files.

How I think of using it I would need to overide or skip duplicate checks, since if I redownload a file (duplicate) I do intend to overwrite the old file.

It is possible a new Main is needed to run without GUI. I'm willing to help testing, but I have no C# experience so it is extremely limited what I can do with the code