WIP: feat(commands)!: Add json output option to prune #625

Job	Run time
Cross checking x86_64-pc-windows-msvc	1m 39s
Cross checking x86_64-pc-windows-gnu	9m 29s
Cross checking x86_64-apple-darwin	9m 50s
Cross checking aarch64-apple-darwin	46s
Cross checking x86_64-unknown-linux-gnu	16s
Cross checking x86_64-unknown-linux-musl	4m 39s
Cross checking aarch64-unknown-linux-gnu	5m 30s
Cross checking i686-unknown-linux-gnu	5m 17s
Cross checking x86_64-unknown-netbsd	5m 34s
Cross checking armv7-unknown-linux-gnueabihf	5m 20s
Result (Cross-CI)	1s
	48m 21s

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