add tools convert format EUVD

[hellosct1]

EU Vulnerability Database (EUVD)
the official EU repository for timely, curated cybersecurity vulnerability intelligence and remediation guidance.

I created a database converter to be compatible with OSV

[jess-lowe]

Hi @hellosct1,

Thanks for the PR and for adding EUVD support!

While we really appreciate the submission, we need our tooling to be easily readable and maintainable long-term. Bash and jq are great for quick prototyping, but they become difficult to test and maintain as things change.

To merge this, the converter will need to be rewritten in a more robust language that fits our ecosystem, like Go or Python :).

Thanks.