Adding minimal LaTeX support

[volhovm]

Mdbook-linkcheck was giving a lot of false positives in our project due to extensive latex use. Since people in the parsing library cannot agree on "standardized way to write latex" I'm adding this simple customizable top-level fix for now by just cutting out LaTeX fragments before doing linkcheck.

[volhovm]

@Michael-F-Bryan This is now ready to review. It seems to work well on our mdbook (with like 30 files) so far, and as long as it's experimental and is not touching other parts of the code I hope it's fine that it's a bit hacky. It's a really nice feature :)

[blandger]

An unit or integration test is needed.
E.g. I don't have any experience with latex and would like to see how it looks in MD text, how it's rendered in epub. Thanks.

[volhovm]

@blandger Smoke tests added!

[volhovm]

@blandger @Michael-F-Bryan Could you take a look at this one? I did add the tests so it should look good now.

[b-studios]

👍 something like this would be super useful. We are also getting a lot of false warnings that lead to error-blindness.

[volhovm]

@blandger @Michael-F-Bryan Anything I can do to help speed this up? The PR should be ready+tested, so hopefully it's very fast to review.

[volhovm]

@Michael-F-Bryan @blandger 👀 could you please take a look at this?

[blandger]

@volhovm sorry, I'm not an onwer or repo admin, the @Michael-F-Bryan is only.

[Michael-F-Bryan]

I'm sorry it's taken almost a year to get this reviewed. I was pretty burnt out towards the end of my time at Wasmer so a lot of my Open Source stuff was pushed to the back burner 😞

[b-studios]

Don't worry, thanks for merging! :)

[volhovm]

no worries, thank you!