Bunch of updates for zap.stream today!

- Auto-topup with NWC

- Stream provider selection UI (more providers to come)

Also much improved payment systems for zap-stream-core including:

- Receive payments with NWC

- LNURL receive payments (LUD-21 required)

- Bitvora receive payments

These improvements will make it much easier for self-hosters to run zap-stream-core anywhere, all you need is a lightning address or NWC connection to receive payments for topups.

More improvements for self-hosters coming soon including a full tutorial on how to deploy zap-stream-core on a clean VM.