Implement `dex` module #575

Job	Run time
Deny	22s
Clippy	36s
Coverage	1m 17s
Test features --no-default-features	1m 2s
Test features --no-default-features --features=hash	57s
Rust 1.65.0	1m 43s
Test features --no-default-features --features=object	50s
Rustfmt	6s
Test features --no-default-features --features=process	54s
Test linux	1m 37s
Test features --no-default-features --features=hash,object	58s
Test linux32	1m 28s
Test features --no-default-features --features=object,authenticode	54s
Test features --all-features	1m 5s
Test Macos 12	4m 51s
Test windows	8m 33s
Test windows32	7m 31s
	34m 44s

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