✨ Add product images and basic nav

frontend/src/components/Header.tsx

@@ -0,0 +1,14 @@
+import React from "react";
+import { Link } from "react-router-dom";
+
+export const Header: React.FC = () => {
+  return (
+    <header>
+      <div>Biceps Bar System - BBS</div>
+      <nav>
+        <Link to="/">Kjøp drikke</Link>
+        <Link to="/deposit">Sett inn penger</Link>
+      </nav>
+    </header>
+  );
+};