Check that instances are Pixelfed ones

Created by: stom79

Currently, it's also possible to connect Mastodon/Pleroma accounts with the app. Maybe it could be useful to use nodeinfo before the oauth process.

endpoint: /.well-known/nodeinfo

Example:

https://pixelfed.social/.well-known/nodeinfo

=> https://pixelfed.social/api/nodeinfo/2.0.json

And check that the software name in the reply matches pixelfed

"software":{"name":"pixelfed","version":"0.10.9"}