add argument for elo

src/main.rs

@@ -15,6 +15,9 @@ pub mod repr;
 #[derive(Parser, Debug)]
 #[command(author, version, about, long_about = None)]
 struct Args {
+    #[arg(short = 'e', long = "elo", default_value = "false")]
+    test_elo: bool,
+
     /// Agent for Black (c=complex, m=manual, r=random) [default: c]
     #[arg(short = 'b', long = "black", default_value = "c", value_parser = ["c", "m", "r"])]
     black_agent: String,
@@ -26,6 +29,10 @@ struct Args {
 
 fn main() {
     let args = Args::parse();
+    if args.test_elo {
+        elo::run();
+        return;
+    }
 
     let future_config = FutureMoveConfig {
         max_depth: 20,