basic pwa setup

website/package.json

@@ -39,6 +39,7 @@
     "@types/react": "^18.0.26",
     "@types/react-dom": "^18.0.9",
     "astro": "^1.7.2",
+    "canvas": "^2.11.0",
     "fraction.js": "^4.2.0",
     "nanoid": "^4.0.0",
     "preact": "^10.7.3",
@@ -47,10 +48,12 @@
     "rehype-autolink-headings": "^6.1.1",
     "rehype-slug": "^5.0.1",
     "remark-toc": "^8.0.1",
-    "tailwindcss": "^3.2.4",
-    "canvas": "^2.11.0"
+    "tailwindcss": "^3.2.4"
   },
   "devDependencies": {
-    "html-escaper": "^3.0.3"
+    "@vite-pwa/astro": "^0.0.1",
+    "html-escaper": "^3.0.3",
+    "vite-plugin-pwa": "^0.14.1",
+    "workbox-window": "^6.5.4"
   }
 }