Switch to pyproject and ruff #2364

Job	Run time
Pylint	3m 35s
Mypy	3m 20s
Documentation	4m 14s
Tests for downstream project grudge	10m 8s
Examples Conda Py3	6m 37s
Tests for downstream project pytential	49m 59s
Pytest Firedrake	6m 31s
Tests for downstream project mirgecom	6s
Examples Firedrake	3m 43s
Tests for downstream project mirgecom_examples	6s
Pytest Conda Py3	10m 53s
Ruff	5s
	1h 39m 17s

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