Add an ArrayBuffer that declares alignment #5875

Job	Run time
Rust (docs)	1m 37s
Python (lint)	3m 45s
bench test	4m 4s
License Check and Audit Check	2m 8s
Rust build (all-features)	4m 3s
Check generated proto/fbs files are up to date	54s
Rust build (default features)	4m 3s
miri	3m 49s
Rust build (with tokio dispatcher)	4m 2s
Python (test)	3m 24s
Rust build (with compio dispatcher)	4m 3s
Rust (tests)	3m 58s
Rust build (with tokio+compio dispatcher)	3m 28s
Rust build (wasm32 with default features)	2m 58s
	46m 16s

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