feat: Add `maybe_async_trait` #1334

Job	Run time
Check all features and all targets against the MSRV, except for winter-prover and winterfell	1m 33s
Test Rust stable on	1m 25s
Light checks	34s
Check prover and winterfell packages	55s
Test Rust nightly on	1m 11s
Build for no-std (stable)	33s
Build for no-std (nightly)	38s
	6m 49s

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