feat: implement `kill -l` #624

Job	Run time
Benchmarks	6m 6s
Test (linux)	1m 49s
Source code checks (stable)	35s
Build (x86_64/linux)	1m 12s
Source code checks (1.75.0)	28s
Test (macOS)	1m 21s
Build (aarch64/macos)	1m 10s
Build (aarch64/linux)	1m 48s
Build (wasm32/wasi-0.1)	50s
Build (x86_64/windows)	1m 46s
OS target tests (Fedora/latest)	31s
OS target tests (Debian/latest)	19s
OS target tests (Arch Linux/latest)	20s
	18m 15s

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