feat: Add `maybe_async_trait` #1331

Job	Run time
Check all features and all targets against the MSRV, except for winter-prover and winterfell	1m 36s
Build for no-std (stable)	40s
Check prover and winterfell packages	1m 0s
Light checks	36s
Build for no-std (nightly)	37s
Test Rust stable on	1m 11s
Test Rust nightly on	1m 13s
	6m 53s

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