docs: add h3 map example

docs/astro.config.mjs

@@ -136,6 +136,10 @@ export default defineConfig({
                   label: 'Dark mode',
                   link: '/docs/examples/dark-mode',
                 },
+                {
+                  label: 'H3 Map',
+                  link: '/docs/examples/h3-map',
+                },
                 {
                   label: 'Toggle Marker',
                   link: '/docs/examples/toggle-marker',

docs/src/content/docs/docs/examples/h3-map.mdx

@@ -0,0 +1,11 @@
+---
+title: 'Example: Add H3 Map'
+description: 'description'
+---
+
+<iframe src="https://codesandbox.io/embed/jvwjjv?view=Editor+%2B+Preview&module=%2Fsrc%2FApp.tsx&hidenavigation=1"
+     style="width:100%; height: 500px; border:0; border-radius: 4px; overflow:hidden;"
+     title="react-google-map-wrapper-h3-map"
+     allow="accelerometer; ambient-light-sensor; camera; encrypted-media; geolocation; gyroscope; hid; microphone; midi; payment; usb; vr; xr-spatial-tracking"
+     sandbox="allow-forms allow-modals allow-popups allow-presentation allow-same-origin allow-scripts"
+   ></iframe>