Describe the solution you'd like
Add ore generation configuration for utility ores

Tell us about the reason(s) why you would implement this feature.
Someone requested it :P

It seems to me that bitumen was forgotten when this was implemented, I can't find it anywhere in the config

it isn't forgotten
we have changed the creation of bitumen and knowing that we would do it, we didn't add it

anyway, thanks for reporting @Tschipp

Ah I see