Enhance README with CLI room checking instructions and implement room name resolution in command handling. Updated handle_init_command and handle_join_command to use resolved room names, improving room access validation. Added CLI command handling in main.rs to list available rooms from the database or fallback configuration.

src/types.rs

@@ -78,6 +78,7 @@ pub(crate) struct DiceGame {
     pub(crate) total_scores: HashMap<ClientId, i32>,
 }
 
+#[allow(dead_code)]
 #[derive(Clone, Debug, Default)]
 pub(crate) struct RoomMeta {
     pub(crate) name: String,