fix: Have an addIcon that adds to both ui and ui-next (#4490)

extensions/default/src/utils/addIcon.ts

@@ -0,0 +1,8 @@
+import { addIcon as addIconUI } from '@ohif/ui';
+import { Icons } from '@ohif/ui-next';
+
+/** Adds the icon to both ui and ui-next */
+export function addIcon(name, icon) {
+  addIconUI(name, icon);
+  Icons.addIcon(name, icon);
+}

extensions/default/src/utils/index.ts

@@ -0,0 +1 @@
+export { addIcon } from './addIcon';