feat!: Make array repeat and scan ops generic over extension reqs #2697

Job	Run time
Check for changes	6s
tests (Rust stable, all features)	2m 39s
Build benchmarks 🏋️	2m 26s
check	1m 36s
tests (Rust nightly, coverage)	3m 22s
tests (Rust 1.75)	2m 37s
tests hugr-llvm	0s
tests (Rust beta)	3m 11s
tests (Rust stable, no features)	1m 47s
Check standard extensions	8s
Required checks 🦀	1s
	17m 53s

Provide feedback