Add a release script

[fcbond]

It would be good to have the xml downloadable for wn.

Let's follow the approach of https://github.com/omwn/omw-data/

• a build script
• a validate script
• a summary script
• a package script
• before the first release link to zenodo Link to Zenodo #7

Called from github actions

[fcbond]

All done except the exact link to github action.