Implement non-event part of singleplayer for #7

rc_singleplayer_room/src/cli.rs

@@ -0,0 +1,23 @@
+use clap::Parser;
+
+#[derive(Parser, Debug)]
+#[command(version, about, long_about = None)]
+pub struct CliArgs {
+    /// TCP port on which to accept connections
+    #[arg(short, long, default_value_t = 4539)]
+    pub port: u16,
+
+    /// IP Address on which to accept connections
+    #[arg(long, default_value_t = {"127.0.0.1".to_string()})]
+    pub ip: String,
+
+    /// Handle one connection and then exit
+    #[arg(short = '1', long)]
+    pub once: bool,
+}
+
+impl CliArgs {
+    pub fn get() -> Self {
+        Self::parse()
+    }
+}