Adds loader

src/components/Loader.tsx

@@ -0,0 +1,34 @@
+import type { ReactNode } from "react";
+
+/**
+ * Loader component for displaying a loading spinner or message during async route loads.
+ * Accepts optional children to customize the loading message.
+ */
+export function Loader({ children }: { children?: ReactNode }) {
+  return (
+    <div className="flex items-center justify-center py-12 text-slate-300">
+      <svg
+        className="animate-spin h-6 w-6 mr-3 text-violet-400"
+        xmlns="http://www.w3.org/2000/svg"
+        fill="none"
+        viewBox="0 0 24 24"
+        aria-hidden="true"
+      >
+        <circle
+          className="opacity-25"
+          cx="12"
+          cy="12"
+          r="10"
+          stroke="currentColor"
+          strokeWidth="4"
+        ></circle>
+        <path
+          className="opacity-75"
+          fill="currentColor"
+          d="M4 12a8 8 0 018-8v4a4 4 0 00-4 4H4z"
+        ></path>
+      </svg>
+      {children || <span>Loading…</span>}
+    </div>
+  );
+}