Save configuration on plugin disable in Main.java

Added the 'saveConfig' method from 'configManager' in the 'onDisable' section in Main.java. This improvement ensures the configuration is saved whenever the plugin is disabled, improving data retention and state management.

src/main/java/org/gecko/wauh/Main.java

@@ -59,6 +59,7 @@ public void onEnable() {
     @Override
     public void onDisable() {
         // Plugin shutdown logic
+        configManager.saveConfig();
     }
 
     public int getRadiusLimit() {