fix: restore Smalruby assets and fix scratch-gui unit tests

packages/scratch-gui/package.json

@@ -169,6 +169,7 @@
     "jest-junit": "7.0.0",
     "mkdirp": "1.0.4",
     "opal-loader": "^0.0.1",
+    "process": "^0.11.10",
     "raf": "3.4.1",
     "react-test-renderer": "18.3.1",
     "redux-mock-store": "1.5.5",
@@ -186,6 +187,8 @@
     "webpack": "5.104.1",
     "webpack-cli": "5.1.4",
     "webpack-dev-server": "5.2.3",
+    "webpack-pwa-manifest": "^4.3.0",
+    "workbox-webpack-plugin": "^7.4.0",
     "yauzl": "^3.2.0"
   },
   "jest": {

packages/scratch-gui/src/components/coming-soon/coming-soon.jsx

@@ -8,8 +8,8 @@ import ReactTooltip from 'react-tooltip';
 
 import styles from './coming-soon.css';
 
-import awwCatIcon from './aww-cat.png';
-import coolCatIcon from './cool-cat.png';
+import iconHatti from './icon-hatti.png';
+import icon2Hatti from './icon2-hatti.png';
 
 const messages = defineMessages({
     message1: {
@@ -50,7 +50,7 @@ class ComingSoonContent extends React.Component {
     }
     getRandomMessage () {
         // randomly chooses a messages from `messages` to display in the tooltip.
-        const images = [awwCatIcon, coolCatIcon];
+        const images = [iconHatti, icon2Hatti];
         const messageNumber = Math.floor(Math.random() * Object.keys(messages).length) + 1;
         const imageNumber = Math.floor(Math.random() * Object.keys(images).length);
         return (