Implement in-game sidebars

src/main/java/gg/malloc/defense/engine/PlayerManager.java

@@ -5,6 +5,10 @@ import org.bukkit.Bukkit;
 import org.bukkit.GameMode;
 import org.bukkit.attribute.Attribute;
 import org.bukkit.event.player.PlayerTeleportEvent;
+import org.bukkit.scoreboard.ScoreboardManager;
+
+import gg.malloc.defense.ui.Sidebar;
+import gg.malloc.defense.model.Progress;
 
 import java.util.HashMap;
 import java.util.Collection;
@@ -90,14 +94,14 @@ public class PlayerManager {
     m_playerReadyStates.put(player, ready);
   }
 
-  public double readyProgress() {
+  public Progress readyProgress() {
     int readyNum = 0;
     for(boolean b : m_playerReadyStates.values()) {
       if (b) {
         readyNum += 1;
       }
     }
-    return (double)readyNum / (double)m_playerReadyStates.size();
+    return new StaticProgress(readyNum, m_playerReadyStates.size());
   }
 
   public boolean isEveryoneReady() {