Bounty: add NWC support to habla.news

Adding support for NWC to Habla would allow for connecting any wallet over nostr for paying on the website. It currently only supports WebLN but Bitcoin connect allows us to configure an NWC connection and expose it through WebLN API. If we go this route the paying code that uses WebLN wouldn't need changes.

Requirements

• Add a "Connect wallet" option on Settings > Wallet screen
• Allow to connect an NWC wallet or nostr extension
• Show wallet connection status on Settings > Wallet screen
• Make sure both extension and NWC are supported for paying

References

• GitHub issue
• Bitcoin connect library
• NDK