Add iterator.take_while_inclusive

[tranzystorekk]

Inspired by rust-itertools/itertools#616, and slightly by https://adventofcode.com/2022/day/8

Behaves almost exactly like take_while, but additionally yields the first element that failed the predicate.

The name feels clear and descriptive, but I'm not against a little bikeshedding (e.g. take_until_inclusive is also a reasonable contender, but would require inverting the predicate checks) 😄

[inoas]

Would this be a candidate for a flag on take_while once default args are part of the language?

[tranzystorekk]

Would this be a candidate for a flag on take_while once default args are part of the language?

Maybe, I don't have a strong opinion; it wouldn't seem unreasonable, but I kind of like it as a separate function

[lpil]

I think this is a relatively niche function and would be best kept in another package or copied into codebases

[lpil]

Thank you @tranzystorek-io !