Attribution Data and HTLC Hold Times

[joostjager]

Tracking issue for adding attribution data: lightning/bolts#1044

• LDK

  • Non-attributable failure logging Log cases where an onion failure cannot be attributed or interpreted #3629
  • Attribution and hold times from failed htlcs Attributable failures #2256
  • Hold time resolution reduction for privacy Reduce attribution data hold time resolution to 100 ms #3868
  • Fulfilled HTLC hold times Hold times for successful payments #3801
  • Expose failed HTLC hold times in PaymentPathFailed outside of testing
  • Hold time tracking over time
  • Hold time-based penalization (network needs to be mostly upgraded)

• Spec

  • Spec PR merged Attribution data (feature 36/37) lightning/bolts#1044