refactor: Refactor and split-up settings #1148

Job	Run time
changes	7s
run-tests-windows (stable, all)	17m 58s
run-checks (ubuntu-latest, stable)	2m 39s
run-tests-windows (stable, none)	14m 23s
run-docs	3m 29s
run-checks (ubuntu-latest, nightly)	2m 31s
run-tests-windows (nightly, all)	24m 6s
run-deny	1m 26s
run-checks (macos-latest, stable)	4m 31s
run-tests-windows (nightly, none)	14m 15s
run-checks (macos-latest, nightly)	4m 20s
run-tests (ubuntu-latest, stable, all)	9m 54s
run-checks (windows-latest, stable)	5m 49s
run-checks (windows-latest, nightly)	5m 45s
run-tests (ubuntu-latest, stable, none)	6m 50s
run-tests (ubuntu-latest, nightly, all)	9m 39s
run-tests (ubuntu-latest, nightly, none)	6m 26s
run-tests (macos-latest, stable, all)	15m 51s
run-tests (macos-latest, stable, none)	12m 49s
run-tests (macos-latest, nightly, all)	17m 18s
run-tests (macos-latest, nightly, none)	11m 9s
	3h 11m 15s

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