feat!: Hugrs now keep a `ExtensionRegistry` with their requirements #2782

Job	Run time
Check for changes in Python files	2s
check python 3.10	11s
Check serialization schema	8s
Build HUGR binary	44s
check python 3.13	22s
test python 3.10	33s
test python 3.13	34s
Required checks 🐍	1s
	2m 35s

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