Add support to speicfy exit code when error happened

src/args.rs

@@ -564,6 +564,12 @@ pub struct Arg {
     #[arg(long, global = true)]
     /// Compress files in Musica paz archive when packing paz archive.
     pub musica_compress: bool,
+    #[arg(short = 'x', long, default_value_t = 0)]
+    /// Exit code when some jobs failed
+    pub exit_code: i32,
+    #[arg(short = 'X', long)]
+    /// Exit code when all jobs failed. By default, this is same as exit_code. This can override exit_code when all jobs failed.
+    pub exit_code_all_failed: Option<i32>,
     #[command(subcommand)]
     /// Command
     pub command: Command,