Make "keep-open" only continue playing similar-named files

[BlepBlep]

Funnily enough, "auto play next files" is a rare setting in video players. I like that this has it, but I do find it a bit annoying how it will ignore whether or not files have a similar name. I used to use Potplayer before moving to this, and it would only auto-play the next file if it had a similar name. ex: "[filename] 01, [filename] 02". This helps when you have small series of files inside of a bigger folder, so it doesn't just start playing random stuff willy-nilly. It also helps if you have image files in the same folder and it just starts going through all of them unexpectedly haha.

(I forgot to make this an issue request, my bad)