[Participate] Request to add witness witness.stagemole.eu

Hello again! We would also like to add our staging witness to the witness network:

- operator name: Mullvad VPN AB - vkey: witness.stagemole.eu +ac5cc086+BEqSG3yu9YrmcM3BHvQYTxwFj3uSWakQepafafpUqklv - log list: testing and/or staging (?) - about page: https://witness.stagemole.eu/about

I don't really understand the part about a performance profile: is there a list of options I can pick from? Does this determine what logs I get from the witness network? Cheers,

Grégoire