Consider adding sr.ht support

[emersion]

Would be nice to support sr.ht too. Would that be in scope for this project?

[ammen99]

I have nothing against this. It'll basically require creating an internal format for passing data, then adapting the github/sr.ht events to that format.

However, I don't think I'll have the time to work on this soon (and I am not very familiar with sr.ht or its API), patches welcome :)