We want RelationshipActionSansFarcaster so we can modify RelationshipRequest to be a union of something like

{action: RelationshipActionSansFarcaster, userIDs: string[]} | {action: 'farcaster', userIDsToFIDs: {[userID: string]: fID}}

This diff doesn't do much on its own, but want to put up simple changes separately from the maybe more "opinionated" changes?

yarn flow:all