feat(ui): add GitHub button component

frontend/components/ui/github-button.tsx

@@ -0,0 +1,27 @@
+import { Button } from "./button";
+
+const GithubButton = () => {
+  return (
+    <Button variant="outline" size="icon">
+      <a href="https://github.com/R1shabh-Gupta/Rubik" target="_blank">
+        <svg
+          xmlns="http://www.w3.org/2000/svg"
+          width="24"
+          height="24"
+          viewBox="0 0 24 24"
+          fill="none"
+          stroke="currentColor"
+          strokeWidth="2"
+          strokeLinecap="round"
+          strokeLinejoin="round"
+          className="lucide lucide-github"
+        >
+          <path d="M15 22v-4a4.8 4.8 0 0 0-1-3.5c3 0 6-2 6-5.5.08-1.25-.27-2.48-1-3.5.28-1.15.28-2.35 0-3.5 0 0-1 0-3 1.5-2.64-.5-5.36-.5-8 0C6 2 5 2 5 2c-.3 1.15-.3 2.35 0 3.5A5.403 5.403 0 0 0 4 9c0 3.5 3 5.5 6 5.5-.39.49-.68 1.05-.85 1.65-.17.6-.22 1.23-.15 1.85v4" />
+          <path d="M9 18c-4.51 2-5-2-7-2" />
+        </svg>
+      </a>
+    </Button>
+  );
+};
+
+export default GithubButton;