[Feature]: Make cosmovisor run pass piped input to the binary

[AaronKutch]

When trying to do something like cat mnemonic.txt | cosmovisor run keys add test --recover it results in Error: EOF being returned from the binary, presumably because it does not pipe anything to the child process. It would be beneficial to at least pipe stdin of cosmovisor to the binary, or maybe inherit both stdin and stdout to allow fully interactive prompts.