feat: File row splits #5870

Job	Run time
License Check and Audit Check	3m 41s
Rust build (all-features)	9m 12s
Rust build (default features)	6m 6s
Python (lint)	3m 35s
Rust build (with tokio dispatcher)	5m 54s
Python (test)	6m 20s
Rust build (with compio dispatcher)	6m 36s
Rust build (with tokio+compio dispatcher)	5m 54s
Rust (docs)	2m 8s
Rust build (wasm32 with default features)	4m 5s
Rust (tests)	12m 28s
bench test	13m 33s
Check generated proto/fbs files are up to date	57s
miri	14m 20s
	1h 34m 49s

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