ELN check

[SteffenBrinckmann]

Dear all,
I created a external eln checker: https://check-eln.streamlit.app

Please comment: what can be improved, added, ...

Eventually, I will move the code into the consortium repository. (Since it is currently an idea, it is not yet moved.)

[NicolasCARPi]

Let me know if you want a CNAME with a subdomain of .elnconsortium.org ;)