Add ProbeLab to the Data Sources

[dennis-tra]

Hi there, this is Dennis from ProbeLab. We're performing continuous network measurements for various chains. Among many we are also measuring the client distribution for the consensus layer and execution layer of the ethereum network. I was curious to learn what it takes to be added as a Data source on your main page.

Here you can find some of our metrics:

https://probelab.io/ethereum/discv5/2025-19/

I'm also happy to provide a detailed description of our methodology although much is already written here: https://probelab.io/ethereum/discv5/methodology/

While on probelab.io there's only data on the discv5/CL network we also have unpublished data on discv4/EL.