docs: Add pwa plugin & update manifest

docs/package.json

@@ -17,6 +17,7 @@
     "@types/node": "^17.0.23",
     "@vuepress/bundler-vite": "^2.0.0-beta.37",
     "@vuepress/plugin-docsearch": "^2.0.0-beta.37",
+    "@vuepress/plugin-pwa": "^2.0.0-beta.38",
     "@windicss/plugin-scrollbar": "^1.2.3",
     "dotenv": "^16.0.0",
     "ohmyfetch": "^0.4.15",

docs/src/.vuepress/public/favicons/site.webmanifest

@@ -1 +1,21 @@
-{"name":"","short_name":"","icons":[{"src":"/android-chrome-192x192.png","sizes":"192x192","type":"image/png"},{"src":"/android-chrome-512x512.png","sizes":"512x512","type":"image/png"}],"theme_color":"#ffffff","background_color":"#ffffff","display":"standalone"}
+{
+  "name": "VueFlow",
+  "short_name": "VueFlow",
+  "description": "Visualize your ideas with Vue Flow, a highly customizable Vue3 Flowchart library.",
+  "start_url": "/index.html",
+  "theme_color": "#10b981",
+  "background_color": "#ffffff",
+  "display": "standalone",
+  "icons": [
+    {
+      "src": "/android-chrome-192x192.png",
+      "sizes": "192x192",
+      "type": "image/png"
+    },
+    {
+      "src": "/android-chrome-512x512.png",
+      "sizes": "512x512",
+      "type": "image/png"
+    }
+  ],
+}