feat: initial implementation of modern modular webshop (shop core)

shop/components/env-var-warning.tsx

@@ -0,0 +1,20 @@
+import { Badge } from "./ui/badge";
+import { Button } from "./ui/button";
+
+export function EnvVarWarning() {
+  return (
+    <div className="flex gap-4 items-center">
+      <Badge variant={"outline"} className="font-normal">
+        Supabase environment variables required
+      </Badge>
+      <div className="flex gap-2">
+        <Button size="sm" variant={"outline"} disabled>
+          Sign in
+        </Button>
+        <Button size="sm" variant={"default"} disabled>
+          Sign up
+        </Button>
+      </div>
+    </div>
+  );
+}