Add a WeightedCost #1592

Job	Run time
style	12s
Test examples (ubuntu-latest / Python 3.12)	14m 21s
Coverage tests (macos-14 / Python 3.12)	5m 19s
Integration tests (ubuntu-latest / Python 3.12)	8m 0s
Test examples (windows-latest / Python 3.12)	14m 38s
Unit tests (ubuntu-latest / Python 3.9)	1m 1s
Integration tests (windows-latest / Python 3.12)	9m 20s
Test examples (macos-13 / Python 3.12)	13m 32s
Unit tests (ubuntu-latest / Python 3.10)	1m 0s
Integration tests (macos-13 / Python 3.12)	7m 54s
Test examples (macos-14 / Python 3.12)	6m 31s
Unit tests (ubuntu-latest / Python 3.11)	1m 1s
Integration tests (macos-14 / Python 3.12)	3m 26s
Unit tests (ubuntu-latest / Python 3.12)	1m 9s
Unit tests (windows-latest / Python 3.9)	2m 17s
Unit tests (windows-latest / Python 3.10)	2m 26s
Unit tests (windows-latest / Python 3.11)	2m 25s
Unit tests (windows-latest / Python 3.12)	2m 22s
Unit tests (macos-13 / Python 3.9)	1m 27s
Unit tests (macos-13 / Python 3.10)	1m 21s
Unit tests (macos-13 / Python 3.11)	1m 3s
Unit tests (macos-13 / Python 3.12)	1m 42s
Unit tests (macos-14 / Python 3.9)	43s
Unit tests (macos-14 / Python 3.10)	40s
Unit tests (macos-14 / Python 3.11)	40s
	1h 44m 30s

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