feat(example page): create initial 4 cards (#21)

* feat(example page): add new examples section in the navbar

* feat(example page): initial layout of the new page

* feat(example page): create initial 4 workflows

* style(example page): center title

* style(example page): remove comment

* fix(example page): add hyperlink for txt2img card

web/src/app/(app)/examples/loading.tsx

@@ -0,0 +1,9 @@
+"use client";
+
+import { LoadingPageWrapper } from "@/components/LoadingWrapper";
+import { usePathname } from "next/navigation";
+
+export default function Loading() {
+  const pathName = usePathname();
+  return <LoadingPageWrapper className="h-full" tag={pathName.toLowerCase()} />;
+}