feat!: Make array repeat and scan ops generic over extension reqs (#1… #2822

Job	Run time
Check for changes	8s
Build benchmarks 🏋️	2m 33s
tests (Rust 1.75)	3m 25s
check	1m 32s
tests (Rust beta)	3m 18s
tests (Rust nightly, coverage)	4m 47s
tests (Rust stable, all features)	2m 56s
tests hugr-llvm (14.0, 14-0)	1m 39s
tests (Rust stable, no features)	2m 1s
Check standard extensions	5s
Required checks 🦀	1s
	22m 25s

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