feat: implement `kill -l` #623

Job	Run time
Benchmarks	5m 56s
Source code checks (stable)	37s
Test (linux)	1m 46s
Build (x86_64/linux)	1m 10s
Source code checks (1.75.0)	31s
Test (macOS)	1m 37s
Build (aarch64/macos)	1m 9s
Build (aarch64/linux)	2m 6s
Build (wasm32/wasi-0.1)	50s
Build (x86_64/windows)	1m 58s
OS target tests (Fedora/latest)	26s
OS target tests (Debian/latest)	16s
OS target tests (Arch Linux/latest)	24s
	18m 46s

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