Start to build cli player

rust/sea_battle_backend/src/args.rs

@@ -0,0 +1,14 @@
+use clap::Parser;
+
+/// Simple sea battle server
+#[derive(Parser, Debug, Clone)]
+#[clap(author, version, about, long_about = None)]
+pub struct Args {
+    /// The address this server will listen to
+    #[clap(short, long, value_parser, default_value = "0.0.0.0:7000")]
+    pub listen_address: String,
+
+    /// CORS (allowed origin) set to '*' to allow all origins
+    #[clap(short, long, value_parser)]
+    pub cors: Option<String>,
+}