feat: Add initial codegen extension for `prelude` #50

Job	Run time
Check for changes in Rust files	3s
tests (Rust stable, all features)	51s
check	51s
tests (Rust 1.75)	39s
Build benchmarks 🏋️	0s
tests (Rust beta)	44s
tests (Rust nightly-2024-05-22)	35s
Required checks 🦀	1s
coverage	0s
	3m 44s

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