Add Farcaster to "social-networks" page

[wdpatti]

Add Farcaster to its own category on the "social-networks" page - Farcaster and especially the client Warpcast has become more popular recently, which I believe deserves a little more recognition. I will also add the EthTrader community's $DONUT ERC-20 to the "Reddit" section of the page, along with Reddit Collectible Avatars.

I have a PR ready for this.

[wdpatti]

This issue is resolved in #15417

[github-actions]

This issue is stale because it has been open 30 days with no activity.