feat!: impl HugrView for any &(mut) to a HugrView (#1678) #2799

Job	Run time
Check for changes	3s
Build benchmarks 🏋️	2m 23s
check	1m 53s
tests (Rust nightly, coverage)	4m 33s
tests (Rust 1.75)	3m 18s
tests (Rust stable, all features)	2m 50s
tests (Rust beta)	2m 48s
tests hugr-llvm (14.0, 14-0)	1m 50s
tests (Rust stable, no features)	1m 57s
Check standard extensions	5s
Required checks 🦀	1s
	21m 41s

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