chore: add cargo-deny to codebase #245

Job	Run time
Get HEAD commit message	5s
Check formatting	1m 29s
Check cargo-deny rules	1m 37s
Run Chopsticks tests	1h 19m 7s
Run Clippy checks	15m 17s
Run Clippy checks (--all-features)	15m 54s
Run Cargo tests	1h 8m 18s
Run Cargo tests (--all-features)	1h 3m 37s
Run try-runtime (peregrine)	18m 1s
Check Rustdoc	15m 16s
Run try-runtime (spiritnet)	19m 39s
Check Rustdoc (--all-features)	15m 4s
	5h 13m 24s

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