RFC 2292 struct and constant definitions #4633

Job	Run time
Clippy on windows-2025	40s
Style check	1m 9s
Check ctest MSRV	20s
Verify build (nightly, 1)	12m 9s
Test tier1 (x86_64-pc-windows-gnu, windows-2025, 64, x86_64)	1m 10s
Verify build (stable)	6m 58s
Ensure docs build	18s
Test tier1 (x86_64-unknown-linux-gnu)	1m 12s
Clippy on macos-15	20s
Test tier1 (aarch64-pc-windows-msvc, windows-11-arm)	1m 12s
Clippy on ubuntu-24.04	10s
Test tier1 (i686-unknown-linux-gnu)	1m 2s
Test tier1 (aarch64-unknown-linux-gnu, ubuntu-24.04-arm)	1m 6s
Test tier1 (aarch64-apple-darwin, macos-15)	55s
Test tier1 (x86_64-pc-windows-msvc, windows-2025)	1m 12s
Test tier1 (i686-pc-windows-msvc, windows-2025)	1m 18s
Verify build (nightly, 2)	11m 21s
Verify build (1.63.0)	5m 54s
Verify build (beta, (aarch64\|x86_64))	2m 7s
Test tier2	0s
Test tier2 VM	0s
success	3s
	50m 36s

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