feat: scaffold Astro + Tailwind project

node_modules/astro/dist/content/instance.js

@@ -0,0 +1,20 @@
+import { ContentLayer } from "./content-layer.js";
+function contentLayerSingleton() {
+  let instance = null;
+  return {
+    init: (options) => {
+      instance?.dispose();
+      instance = new ContentLayer(options);
+      return instance;
+    },
+    get: () => instance,
+    dispose: () => {
+      instance?.dispose();
+      instance = null;
+    }
+  };
+}
+const globalContentLayer = contentLayerSingleton();
+export {
+  globalContentLayer
+};