prepare for 1.21.3 update

patches/unapplied-api/0047-Explorer-Map-API.patch

@@ -0,0 +1,23 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: William Blake Galbreath <blake.galbreath@gmail.com>
+Date: Wed, 5 Jul 2023 12:48:08 -0500
+Subject: [PATCH] Explorer Map API
+
+
+diff --git a/src/main/java/org/bukkit/map/MapRenderer.java b/src/main/java/org/bukkit/map/MapRenderer.java
+index cb7040876a99a5a7e49b81684ef0f3b79584c376..22d8f31b1b8a5dbb5ab3275068642937c097abfe 100644
+--- a/src/main/java/org/bukkit/map/MapRenderer.java
++++ b/src/main/java/org/bukkit/map/MapRenderer.java
+@@ -54,4 +54,12 @@ public abstract class MapRenderer {
+      */
+     public abstract void render(@NotNull MapView map, @NotNull MapCanvas canvas, @NotNull Player player);
+ 
++    // Purpur - start
++    /**
++     * Check if this is an explorer (aka treasure) map.
++     *
++     * @return True if explorer map
++     */
++    public abstract boolean isExplorerMap();
++    // Purpur - end
+ }