Naming of the rendered file should ideally come from user input selection

[hesmoar]

Currently naming for the file comes from the name of the timeline, however if we add the option for the user to choose what task to publish to in the GUI then we should rethink the process and get the naming from there, maybe we can use the short name of the task. That way we take the info from kitsu apply it into the filename and it doesnt matter how the user names the timeline, which might help to give more freedom to the user inside the software and just having to worry about selecting the correct task.