add missing file

dkg/src/args.rs

@@ -0,0 +1,8 @@
+use clap::Parser;
+
+#[derive(Parser, Debug, Default)]
+#[command(author, version, about, long_about = None)]
+pub struct Args {
+    #[arg(short = 'C', long, default_value = "ed25519")]
+    pub ciphersuite: String,
+}