feat(wallet): Improve Scanning Error Notifications

[coreyphillips]

This PR:

• Updates scanning logic to provide more context when an error occurs.
• Sets up lnurl logic and adds custom notifications in the meantime.
• Adds getLightningBalance method to utils/lightning.ts.
• Makes source & sdk params optional in processInputData method.

Notes:

• While not perfect, I wanted to provide users with a bit more context when an error occurs prior to the next release.
  • In this iteration, more descriptive notifications will appear when an error occurs while scanning.
    • For example, if a user does not have enough sats to pay an invoice, a notification will appear to state this fact along with how many more sats are required to fulfill the invoice.
  • In the event there are multiple requests in a given qrcode/invoice, the error messages will be appended in the order they occur and appear in the notification message.
  • Notification messages were also added to the following lnurl scan events (lnurlPay, lnurlAuth, lnurlWithdraw & lnurlChannel).
  • The sdk param was made optional so that processInputData method can be called in a given function without having to pass sdk through several other methods when we know we will not need to process slashtags data.