Add a WeightedCost #1696

Job	Run time
style	12s
Coverage tests (macos-14 / Python 3.12)	5m 49s
Integration tests (ubuntu-latest / Python 3.12)	7m 48s
Unit tests (ubuntu-latest / Python 3.9)	1m 9s
Integration tests (windows-latest / Python 3.12)	10m 7s
Unit tests (ubuntu-latest / Python 3.10)	1m 5s
Test examples (ubuntu-latest / Python 3.12)	17m 15s
Integration tests (macos-13 / Python 3.12)	7m 40s
Unit tests (ubuntu-latest / Python 3.11)	1m 2s
Test examples (windows-latest / Python 3.12)	17m 20s
Test examples (macos-13 / Python 3.12)	18m 26s
Integration tests (macos-14 / Python 3.12)	3m 25s
Unit tests (ubuntu-latest / Python 3.12)	1m 11s
Test examples (macos-14 / Python 3.12)	6m 43s
Unit tests (windows-latest / Python 3.9)	2m 48s
Unit tests (windows-latest / Python 3.10)	2m 12s
Unit tests (windows-latest / Python 3.11)	2m 50s
Unit tests (windows-latest / Python 3.12)	2m 50s
Unit tests (macos-13 / Python 3.9)	1m 50s
Unit tests (macos-13 / Python 3.10)	1m 28s
Unit tests (macos-13 / Python 3.11)	2m 46s
Unit tests (macos-13 / Python 3.12)	2m 47s
Unit tests (macos-14 / Python 3.9)	1m 6s
Unit tests (macos-14 / Python 3.10)	1m 1s
Unit tests (macos-14 / Python 3.11)	47s
	2h 1m 37s

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