doc: documentation is now in the same repository as the code

Demo site will be generated in subfolder /demo

docs/.vitepress/theme/index.ts

@@ -0,0 +1,15 @@
+import DefaultTheme from 'vitepress/theme'
+import './custom.css'
+
+export default {
+    ...DefaultTheme,
+    enhanceApp({ router }) {
+        const oldOnAfterRouteChanged = router.onAfterRouteChanged;
+
+        router.onAfterRouteChanged = () => {
+            oldOnAfterRouteChanged && oldOnAfterRouteChanged();
+            if (typeof _carbonads !== 'undefined')
+                _carbonads.refresh();
+        }
+    }
+}