feat: support 0conf channels

[rolznz]

Fixes #119

Notes:

• Voltage LSP has been disabled for now (it just doesn't show in the list)
• All payments will be deleted when you first update, since we do not migrate old payment entries in the LDK database

TODOs:

• Working with Voltage - get peer's feerate is much too low (waiting for response from LDK - seems to only happen on mempool spikes)
• Working with Zeus
  • Why did I need to restart my node and re-pair to un-stuck the wrapped invoice payment? - probably event handling issues?
  • Sent logs of rare occurrence where LDK node got stuck at one point when receiving open channel message
  • Why do I need to re-pair after restarting the node? - LDK bug (fixed)
• update ldk-node-go library once anchor support PR is merged
• update keysend to listen to ldk payment events
• undo hacks in the code
  • consume from ldk-node-go
    • mac support
  • ldk storage path
  • description
  • expiry
• move 0conf channel creation to UI (similar to what was planned with Blocktank)
• move event handling and payment reason fixes to separate PR
• run an Alby esplora service - esplora issues seem to cause delays and unexpected behavior here? moved to separate issue
• add migration to delete old LDK payments (they are incompatible)