Merge pull request #3204 from valentinewallace/2024-07-rb-test-vectors

Implement route blinding test vectors

diff --cc fuzz/src/onion_hop_data.rs
Simple merge

diff --cc lightning/src/ln/channelmanager.rs
Simple merge

diff --cc lightning/src/ln/msgs.rs
Simple merge

diff --cc lightning/src/ln/payment_tests.rs
Simple merge

diff --cc lightning/src/routing/router.rs
Simple merge