PreSpawnerSpawnEvent

This adds a separate event before an entity is spawned by a spawner
which contains the location of the spawner too similarly to how the
SpawnerSpawnEvent gets called instead of the CreatureSpawnEvent for
spawners.

Dropped as it does not apply due to the earlier PreCreatureSpawnEvent patch not being applied

paper-api/src/main/java/com/destroystokyo/paper/event/entity/PreSpawnerSpawnEvent.java

@@ -0,0 +1,29 @@
+package com.destroystokyo.paper.event.entity;
+
+import org.bukkit.Location;
+import org.bukkit.entity.EntityType;
+import org.bukkit.event.entity.CreatureSpawnEvent;
+import org.jetbrains.annotations.ApiStatus;
+import org.jspecify.annotations.NullMarked;
+
+/**
+ * Called before an entity is spawned into a world by a spawner.
+ * <p>
+ * This only includes the spawner's location and not the full BlockState snapshot for performance reasons.
+ * If you really need it you have to get the spawner yourself.
+ */
+@NullMarked
+public class PreSpawnerSpawnEvent extends PreCreatureSpawnEvent {
+
+    private final Location spawnerLocation;
+
+    @ApiStatus.Internal
+    public PreSpawnerSpawnEvent(final Location location, final EntityType type, final Location spawnerLocation) {
+        super(location, type, CreatureSpawnEvent.SpawnReason.SPAWNER);
+        this.spawnerLocation = spawnerLocation;
+    }
+
+    public Location getSpawnerLocation() {
+        return this.spawnerLocation.clone();
+    }
+}