Add WhitelistToggleEvent

paper-api/src/main/java/com/destroystokyo/paper/event/server/WhitelistToggleEvent.java

@@ -0,0 +1,42 @@
+package com.destroystokyo.paper.event.server;
+
+import org.bukkit.event.Event;
+import org.bukkit.event.HandlerList;
+import org.jetbrains.annotations.ApiStatus;
+import org.jspecify.annotations.NullMarked;
+
+/**
+ * This event is fired when whitelist is toggled
+ *
+ * @author Mark Vainomaa
+ */
+@NullMarked
+public class WhitelistToggleEvent extends Event {
+
+    private static final HandlerList HANDLER_LIST = new HandlerList();
+
+    private final boolean enabled;
+
+    @ApiStatus.Internal
+    public WhitelistToggleEvent(final boolean enabled) {
+        this.enabled = enabled;
+    }
+
+    /**
+     * Gets whether whitelist is going to be enabled or not
+     *
+     * @return Whether whitelist is going to be enabled or not
+     */
+    public boolean isEnabled() {
+        return this.enabled;
+    }
+
+    @Override
+    public HandlerList getHandlers() {
+        return HANDLER_LIST;
+    }
+
+    public static HandlerList getHandlerList() {
+        return HANDLER_LIST;
+    }
+}