[FEATURE REQUEST] Include chapter range in filename when downloading specific chapters

[sosnik]

The filename seems to always be the name/title of the story. When you download a subset of chapters, for instance using -chapters 20 last, it would improve QOL to include the chapter rage in the filename like <title> ch <x> to <y>.

Why? Because the filename itself is just not descriptive. One could create a wrapper script (which is, incidentally, what I will end up doing while this issue ticks along) but the ideal solution would be either another cli flag or a persistent config setting to make filenames more descriptive. That way, you don't end up with Story (20).epub after following a serial for a while.

[Flameish]

Fun fact: Apparently the program already supports this.

It's even persistent so it works from the cli once set in the GUI/Config.