Added Pixelfed (swarm) Federated image sharing

New recipe - Pixelfed, like Instagram on the Fediverse. Check it out here.

Pixelfed is a free and ethical, open-source, federated (i.e., decentralized) social image sharing platform. As Mastodon is to Twitter, so Pixelfed is to Instagram. Pixelfed uses the ActivityPub protocol, allowing users to interact with other users (on other servers) within the protocol, such as Mastodon, PeerTube, and Friendica, making Pixelfed a part of the Fediverse.

Much like Mastodon, Pixelfed implements chronological timelines with no implementation of content manipulation algorithms and is privacy-focused with no third party analytics or tracking. It only allows users over 16 years old to use.