Initial layout and a few pages

routes/setup/index.tsx

@@ -0,0 +1,25 @@
+import { Button } from "../../components/Button.tsx";
+import { Content } from "../../components/Content.tsx";
+
+export default function Setup() {
+  return (
+    <div class="container p-8">
+      <Content>
+        <h2 className="font-pixel text-2xl">Select Loader</h2>
+        <p>Choose between Forge, Fabric, or Vanilla</p>
+
+        <div class="m-auto flex gap-4 mt-4">
+          <a href="/setup/vanilla">
+            <Button>Vanilla</Button>
+          </a>
+          <a href="/setup/fabric">
+            <Button>Fabric</Button>
+          </a>
+          <a href="/setup/forge">
+            <Button>Forge</Button>
+          </a>
+        </div>
+      </Content>
+    </div>
+  );
+}