It was using the wrapper zap request id instead of the inner id. Fix
this type error by creating a ZapRequestId wrapper that makes sure it
uses the proper request id.
Orange means payment successful now, not just presence of zap
This introduces a paid pending state, which shows up as an orange timer
thing in the zaps view. This can be useful if the zap is never sent. We
don't want the user to think the payment didn't go through.
A fairly large change that replaces Zaps in the codebase with "Zapping"
which is a tagged union consisting of a resolved Zap and a Pending Zap.
These are both counted as Zaps everywhere in Damus, except pending zaps
can be cancelled (most of the time).
This adds private zaps, which have messages and authors encrypted to
the target. Keys are deterministically generated so that both the
receiver and sender can decrypt.
Changelog-Added: Private Zaps
