Additions for #327 - Enable `DesignCosts` in `WeightedCost` #1695

Job	Run time
style	12s
Test examples (ubuntu-latest / Python 3.12)	17m 22s
Test examples (windows-latest / Python 3.12)	17m 23s
Unit tests (ubuntu-latest / Python 3.9)	1m 10s
Coverage tests (macos-14 / Python 3.12)	5m 10s
Test examples (macos-13 / Python 3.12)	19m 31s
Integration tests (ubuntu-latest / Python 3.12)	9m 26s
Unit tests (ubuntu-latest / Python 3.10)	1m 10s
Test examples (macos-14 / Python 3.12)	7m 29s
Integration tests (windows-latest / Python 3.12)	9m 32s
Unit tests (ubuntu-latest / Python 3.11)	1m 5s
Integration tests (macos-13 / Python 3.12)	8m 15s
Unit tests (ubuntu-latest / Python 3.12)	1m 13s
Integration tests (macos-14 / Python 3.12)	4m 0s
Unit tests (windows-latest / Python 3.9)	2m 6s
Unit tests (windows-latest / Python 3.10)	4m 0s
Unit tests (windows-latest / Python 3.11)	2m 6s
Unit tests (windows-latest / Python 3.12)	2m 12s
Unit tests (macos-13 / Python 3.9)	1m 27s
Unit tests (macos-13 / Python 3.10)	1m 29s
Unit tests (macos-13 / Python 3.11)	1m 14s
Unit tests (macos-13 / Python 3.12)	1m 45s
Unit tests (macos-14 / Python 3.9)	54s
Unit tests (macos-14 / Python 3.10)	51s
Unit tests (macos-14 / Python 3.11)	1m 6s
	2h 2m 8s

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