Metadata service in Gaudi

[atrisovic]

Hi there,

Please consider adding a paragraph about the Gaudi Metadata service in the Starterkit. You can find out more about the service here:

https://github.com/atrisovic/lhcb-metadatasvc

and, there is a short paper on it here:

https://arxiv.org/abs/1910.02863

I would be happy to help if I can.

Cheers, Ana