plugins: updates to remove usage of .icon.svg

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

plugins/codescene/dev/index.tsx

@@ -20,11 +20,13 @@ import {
   CodeScenePage,
   CodeSceneProjectDetailsPage,
 } from '../src/plugin';
+import { CodeSceneIcon } from '../src';
 
 createDevApp()
   .registerPlugin(codescenePlugin)
   .addPage({
     element: <CodeScenePage />,
+    icon: CodeSceneIcon,
     title: 'Root Page',
     path: '/codescene',
   })