move ImagesPlugin icons to resource root

images/intellij.platform.images.iml

@@ -4,6 +4,7 @@
     <exclude-output />
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/resources" type="java-resource" />
     </content>
     <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />

images/src/icons/ImagesIcons.java

@@ -9,7 +9,7 @@ import javax.swing.*;
  * NOTE THIS FILE IS AUTO-GENERATED
  * DO NOT EDIT IT BY HAND, run "Generate icon classes" configuration instead
  */
-public class ImagesIcons {
+public final class ImagesIcons {
   private static Icon load(String path) {
     return IconLoader.getIcon(path, ImagesIcons.class);
   }