Support exec native simulator debug

[joii2020]

No description provided.

[quake]

suggest to use iter:

let native_binaries = self.simulator_binaries
        .iter()
        .map(|(code_hash, path)| {
            let buf = vec![
                code_hash.as_bytes().to_vec(),
                vec![0xff],
                0u32.to_le_bytes().to_vec(),
                0u32.to_le_bytes().to_vec(),
            ].concat();

            format!(
                "\"0x{}\" : \"{}\"",
                faster_hex::hex_string(&buf),
                path.to_str()
            )
        })
        .collect::<Vec<String>>()
        .join(",");