Created a network packet for when a client presses a key. (Mod is now also client sided). Renamed some event handlers. Made it so after a client presses a key their grace period starts. After the grace period ends the player is removed from the list.

src/main/java/com/micle/loginprotection/LoginProtection.java

@@ -13,6 +13,7 @@ import java.util.List;
 public class LoginProtection {
     public static final String MOD_ID = "loginprotection";
     public static ProtectedPlayers protected_players = new ProtectedPlayers();
+    public static boolean has_pressed_key = false;
 
     public LoginProtection() {
         Registration.register();