New feed to import openeuler

[adulau]

• https://repo.openeuler.org/security/data/cvrf/ (a cross-reference of CVE exist) - CVRF parser exists but it's indeed XML ;-)

[Rafiot]

so cvrf is old csaf: https://oasis-open.github.io/csaf-documentation/specification.html

And a practical open question: do we render the raw document on the website? If yes, how? And how do we generate the dumps? XML? some kind of conversions to json?

Also, this website doesn't let me figure out if and how anything was modified without re-fetching everything.