Use extension trait to simplify config #833

Job	Run time
Clippy (stable) (ubuntu-latest)	1m 1s
Clippy (-Zbuild-std)	59s
Clippy (stable) (macos-latest)	26s
Clippy (stable) (windows-latest)	1m 46s
Clippy (MSRV) (ubuntu-latest)	2m 10s
Clippy (MSRV) (macos-latest)	1m 56s
Test (Android)	3m 49s
Clippy (MSRV) (windows-latest)	2m 54s
Test (ubuntu-latest)	30s
Test (macos-latest)	19s
Test iOS (Catalyst)	18s
Test (windows-latest)	1m 48s
Ktlint	40s
Check for documentation errors	19s
Rustfmt	17s
Check semver compatibility	25s
Test (FreeBSD)	2m 24s
Verify Android artifacts	1m 10s
	23m 11s

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