Adds some events that trigger when NPC actions start or end, and when sounds are played

src/main/java/net/knarcraft/blacksmith/config/scrapper/ScrapperSetting.java

@@ -302,7 +302,7 @@ public enum ScrapperSetting implements Setting {
      * @param isPerNPC    <p>Whether this setting is per-NPC or global</p>
      * @param isMessage   <p>Whether this option is for an NPC message</p>
      */
-    ScrapperSetting(@NotNull String key, @NotNull SettingValueType valueType, @NotNull Object value,
+    ScrapperSetting(@NotNull String key, @NotNull SettingValueType valueType, @Nullable Object value,
                     @NotNull String description, boolean isPerNPC, boolean isMessage) {
         if (isPerNPC) {
             if (isMessage) {