Serialize Trampoline payloads in outbound onions.#2756

valentinewallace merged 3 commits intolightningdevkit:mainlightningdevkit/rust-lightning:mainfrom

arik-so:arik/trampoline/2023-11-outboundarik-so/rust-lightning:arik/trampoline/2023-11-outboundCopy head branch name to clipboard