[RFC] Add BOLT 12 payer proof primitives #22985

Job	Run time
benchmark	17m 25s
fuzz_sanity	7m 5s
linting	2m 0s
ext-test	6m 40s
rustfmt	14s
check_release	2m 55s
check_docs	7m 16s
build-cfg-flags / build (self-hosted, 1.75.0)	13m 38s
tor-connect	5m 40s
build-nostd / build (self-hosted, 1.75.0)	15m 12s
build-bindings / build (self-hosted, 1.75.0)	20m 52s
build-workspace / build (self-hosted, 1.75.0)	12m 34s
build-features / build (self-hosted, 1.75.0)	36m 15s
build-sync / build (self-hosted, 1.75.0)	27m 10s
fuzz	48m 28s
coverage	21m 51s
notify-failure	0s
	4h 5m 15s

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