FEAT: implement `unevaluated_expression` decorator #272

Job	Run time
style / Determine skipped pre-commit hooks	9s
pytest / Determine job matrix	5s
doc / nb / Execute and build documentation	1m 25s
doc / linkcheck / Check external links	6m 0s
pytest / Run unit tests (3.10, ubuntu-22.04)	1m 1s
pytest / Run unit tests (3.11, ubuntu-22.04)	58s
pytest / Run unit tests (3.12, ubuntu-22.04)	1m 7s
pytest / Run unit tests (3.7, ubuntu-22.04)	1m 8s
pytest / Run unit tests (3.9, ubuntu-22.04)	59s
pytest / Run unit tests (3.8, ubuntu-22.04, ampform)	1m 49s
pytest / Run unit tests (3.9, macos-12)	2m 48s
style / Run local pre-commit hooks	2m 16s
style / Run taplo through pre-commit	28s
style / Push changes	0s
doc / Upload to GitHub Pages	0s
	20m 13s

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