added all pages placeholders

src/pages/pictures/pictures.tsx

@@ -0,0 +1,15 @@
+import "./pictures.css"
+import Sidebar from "../../components/Sidebar";
+
+const Pictures = () => {
+  return (
+    <div className="pictures">
+      <Sidebar/>
+      <div className="pictures-content">
+        <h2>Pictures</h2>
+      </div>
+    </div>
+  )
+}
+
+export default Pictures;