UPDATE: split the webapp in a widget and the app itself

This splits the webapp in:

* IronCalc (the widget to be published on npmjs)
* The frontend for our "service"
* Adds "dummy code" for the backend using sqlite

webapp/app.ironcalc.com/frontend/package.json

@@ -0,0 +1,32 @@
+{
+  "name": "frontend",
+  "private": true,
+  "version": "0.3.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "tsc -b && vite build",
+    "preview": "vite preview",
+    "check": "biome check ./src",
+    "check-write": "biome check --write ./src"
+  },
+  "dependencies": {
+    "@emotion/react": "^11.14.0",
+    "@emotion/styled": "^11.14.0",
+    "@ironcalc/ironcalc": "file:../../IronCalc",
+    "@mui/material": "^6.3.1",
+    "lucide": "^0.469.0",
+    "lucide-react": "^0.469.0",
+    "react": "^18.3.1",
+    "react-dom": "^18.3.1"
+  },
+  "devDependencies": {
+    "@biomejs/biome": "1.8.3",
+    "@types/react": "^18.3.18",
+    "@types/react-dom": "^18.3.5",
+    "@vitejs/plugin-react": "^4.3.4",
+    "typescript": "~5.6.2",
+    "vite": "^6.0.5",
+    "vite-plugin-svgr": "^4.2.0"
+  }
+}