Create tcp server

src/emulator.rs

@@ -1,5 +1,6 @@
 use std::{
     collections::HashMap,
+    fmt::Display,
     fs::{self, File},
     io::{Read, Seek, SeekFrom, Write},
     path::{Path, PathBuf},
@@ -45,6 +46,14 @@ impl SimId {
         }
     }
 }
+impl Display for SimId {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        f.write_str(match self {
+            Self::Player1 => "Player 1",
+            Self::Player2 => "Player 2",
+        })
+    }
+}
 
 struct Cart {
     rom_path: PathBuf,