Add ⚡️ content to `Payments` > `Receiving bitcoin`

[GBKS]

First step is to review the page for additions and changes.

Ideas:

• Add ideas for changes here...

[Bosch-0]

Quick overview:

Whole new page needed.

• Receiving payments - how its done
  • Basic flow overview at the start.
  • Sharing invoice / Lightning address
  • Cover other payment protocols to consider when receiving (LNURL-Pay, BOLT11, BOLT12, AMP invoices). How are these shared with the recipient.
• Add details about LN receive payment confirmation UX.
• Add details around receiving LN error states: Create a page for designing error states #505
• Add LSP content throughout. Ones that are relevant: Pay-to-open, swaps, spend-unconfirmed, payment forwarding.
• Add content about channel state changes when receiving and how that pertains to backups.