We recently fixed #1589, which triggers a wallet rescan when a wallet is restored from a descriptor. However, rescans are expensive. We should allow the user to optinally provide a timestamp or date when restoring, in order to avoid rescanning the entire chain.

Maybe something like:

ord wallet restore --timestamp N

Where N is either a unix timestamp, or a YYYY-MM-DD date. If the user provides a date, we should round it to midnight the previous day, to avoid issues with time zones.