Rust

Use `scale-typegen` as a backend for the codegen #3663

Job	Run time
Cargo fmt	17s
Test (Native)	11m 11s
Check documentation and run doc tests	8m 28s
Cargo check	10m 0s
Test (Light Client)	5m 26s
Test (Unstable Backend)	11m 17s
Cargo check (WASM)	1m 35s
Cargo clippy	5m 18s
Test (WASM)	6m 26s
	59m 58s

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