This PR adds 3 new features to Boltcards extension:
Card expiration date - you can now set a YYYY-MM-DD expiration date for a card and it will not allow withdrawals after that date.
Monthly spend limit - you can now set a monthly spend limit for a card and it will not allow withdrawals above that amount in a given calendar month
Limit type - you can now choose to track daily & monthly limits in fiat. This leverages the fiat tracking functionality in core and must be enabled to function properly.
This PR adds 3 new features to Boltcards extension:
Can use/try this update from Bitcoin Jungle's lnbits extensions repo: https://raw.githubusercontent.com/Bitcoin-Jungle/lnbits-extensions/main/extensions.json