feat: support stdin in cast 4byte-decode

[onbjerg]

Closes #2077

$ ./target/local/cast tx 0x8ee80b1fdc814a71aaf11d01b4409c37de43e48b2221251d625d123df221098f --json | jq -r .input | ./target/local/cast 4byte-decode
1) "mint(uint256,bytes)"
1655145740
0xe26b098c2e13597b890be3e99cd4d77d2d2ac222d4097a3c6e3109b8214f53862ee444293619012a112d647143ff8f178983b663db20d7a98c6a0d2bca56150e

[shekhirin]

What I don't really like about that approach with unwrap_or_stdin is that if you call such commands without arguments, they just hang and don't display any help. It'd be cool to use something like atty like it's done in formatter:

foundry/cli/src/cmd/forge/fmt.rs

Line 80 in 43560aa

let inputs = if root == PathBuf::from("-") || !atty::is(atty::Stream::Stdin) {

[mattsse]

What I don't really like about that approach with unwrap_or_stdin is that if you call such commands without arguments, they just hang and don't display any help. It'd be cool to use something like atty like it's done in formatter:

foundry/cli/src/cmd/forge/fmt.rs

Line 80 in 43560aa

let inputs = if root == PathBuf::from("-") || !atty::is(atty::Stream::Stdin) {

very good point, we should integrate this check in a followup,
a lot of cast commands using unwrap_or_stdin