ci: add job to test programs separately #1690

Job	Run time
Code Coverage (ubuntu-latest, unix)	1m 31s
Test each util separately (macOS-latest)	24s
Test each util separately (windows-latest)	36s
cargo check (ubuntu-latest)	1m 29s
cargo test (macOS-latest)	50s
cargo check (macOS-latest)	25s
Test each util separately (ubuntu-latest)	40s
cargo check (windows-latest)	1m 25s
cargo test (ubuntu-latest)	1m 32s
cargo test (windows-latest)	1m 22s
Code Coverage (windows-latest, windows)	1m 29s
Code Coverage (macos-latest, macos)	1m 39s
	13m 22s

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