Add `prefer_sub_words`

[barraIhsan]

Sometimes, there are releases that includes 3 subs, Sign/Song, Full (normal), and Full (normal) + Honorifics. And I'd like to use Honorifics if it's available. My current tries are using

preferred_sub_lang=eng/en
excluded_sub_words=sign
expected_sub_words=honor

That work fine until there are no honorifics sub.

In my testing, I found with "Signs" and "Dialogue" (both en), and because honorifics isn't found, it chooses Signs (which are "excluded" interestingly) maybe because it's the first en track?

I know, maybe I shouldn't use the expected_sub_words so I would like something like prefer_sub_words or something like that, thanks.