Fix and add new scoreboard API (#10037)

patches/server/Fix-scoreboard-entries.patch

@@ -0,0 +1,36 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jake Potrebic <jake.m.potrebic@gmail.com>
+Date: Sat, 16 Dec 2023 13:06:20 -0800
+Subject: [PATCH] Fix scoreboard entries
+
+1.20.3/4 introduced ScoreHolder which broke a lot of existing
+logic that just assumed score entries were strings.
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/scoreboard/CraftScore.java b/src/main/java/org/bukkit/craftbukkit/scoreboard/CraftScore.java
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
+--- a/src/main/java/org/bukkit/craftbukkit/scoreboard/CraftScore.java
++++ b/src/main/java/org/bukkit/craftbukkit/scoreboard/CraftScore.java
+@@ -0,0 +0,0 @@ final class CraftScore implements Score {
+     public int getScore() {
+         Scoreboard board = this.objective.checkState().board;
+ 
+-        if (board.getTrackedPlayers().contains(this.entry)) { // Lazy
++        // if (board.getTrackedPlayers().contains(this.entry)) { // Lazy // Paper - just use the null check
+             ReadOnlyScoreInfo score = board.getPlayerScoreInfo(this.entry, this.objective.getHandle());
+             if (score != null) { // Lazy
+                 return score.value();
+             }
+-        }
++        // } // Paper - just use the null check above
+ 
+         return 0; // Lazy
+     }
+@@ -0,0 +0,0 @@ final class CraftScore implements Score {
+     public boolean isScoreSet() {
+         Scoreboard board = this.objective.checkState().board;
+ 
+-        return board.getTrackedPlayers().contains(this.entry) && board.getPlayerScoreInfo(this.entry, this.objective.getHandle()) != null;
++        return /*board.getTrackedPlayers().contains(this.entry) && */board.getPlayerScoreInfo(this.entry, this.objective.getHandle()) != null; // Paper - just check if the player score info exists
+     }
+ 
+     @Override