add help for addr2line

Author: TurtleP

src/commands.rs

@@ -41,6 +41,7 @@ pub enum Command {
         #[arg(long, help = "File to write logging output to")]
         file: Option<PathBuf>,
     },
+    /// Resolve exception addresses using a debug binary
     Addr2line {
         #[arg(help = "Path to the debug binary")]
         filepath: PathBuf,