FreshRSS integration

[rocka]

FreshRSS is a self-hosted RSS feed aggregator, like Tiny Tiny RSS.

There are two distinct APIs avaliable:

• Google Reader compatible API: https://freshrss.github.io/FreshRSS/en/users/06_Mobile_access.html
• Fever API: https://freshrss.github.io/FreshRSS/en/users/06_Fever_API.html