Minimally migrate to pyproject.toml #480

Job	Run time
Python 3.7 on macos-13	2m 46s
Python 3.7 on Windows x86	2m 32s
Python 3.12 on macos-13	3m 2s
Linux docs	1m 1s
Python 3.8 on Windows x86	2m 18s
Python 3.12 (minimal build) on macos-13	2m 46s
Python 3.9 on Windows x86	2m 32s
Linux meta	1m 8s
Python 3.12 on macos-latest	1m 34s
Python 3.10 on Windows x86	2m 24s
Linux mypy	59s
Python 3.12 (minimal build) on macos-latest	1m 30s
Python 3.11 on Windows x86	2m 20s
Linux pypy3	2m 38s
Python 3.12 on Windows x86	3m 4s
Linux pypy3	2m 44s
Python 3.7 on Windows x64	2m 9s
Linux py37	1m 45s
Python 3.8 on Windows x64	1m 50s
Linux py38	1m 45s
Python 3.9 on Windows x64	1m 48s
Linux py39	1m 45s
Python 3.10 on Windows x64	2m 10s
Linux py310	1m 46s
Linux py311	1m 47s
Linux py312	1m 44s
Python 3.11 on Windows x64	2m 5s
Linux py312 system	2m 23s
Python 3.12 on Windows x64	2m 18s
Linux py312 minimal	1m 39s
	1h 2m 12s

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