[FR] Allow multiple instances per frontend

[RAPXT]

Hi, thank you for making it possible to browse through social media privately (through your redirect APP) :)

When browsing through sm, sometimes the selected instance for an frontend isn't reachable and the website can't load.

Therefore it would be nice, if the user could select multiple instances (preferrebly sidestep would ping an instance to check it's latency and sort accordingly), so when one instance fails sidestep automatically selects the next one.

That's probably not easy to implement, but would be a huge benefit and greatly improved UX.

[blankdotdev]

Thanks for the suggestion. I implemented it, but I don't like the outcome.

The issue is Sidestep pings some alternatives and they return a response, but not a very useful one:

I'll try to see if this can be addressed better, but until then I won't include this.