[FEAT] Concrete examples for high-level benefits

On our homepage we talk about the things we know and love about Wasm, wasmCloud, components, NATS, etc. I think we do a good job of tying some of those benefits to ideas in https://wasmcloud.com/docs/tour/why-wasmcloud/. What we are distinctly missing are concrete, to-the-point examples that show the difference between container-based applications and wasmCloud-based applications for our strengths.

Some of the things that we could have quick workflows/examples/docs pages around are:

1. Demonstrating the scale-to-zero benefit
2. Upgrading dependencies
3. Component composition (perhaps wash work here to simplify tooling requirements)
4. Running multiple components on different routes
5. Cloud deployments
6. The transition from dev -> production
7. ...?
   Feedback generally adopted from https://news.ycombinator.com/item?id=43039962

Start with the homepage and the docs tour at docs/tour/why-wasmcloud/ to identify benefits that need concrete demonstrations. Review the proposed areas—scale-to-zero, dependency upgrades, component composition, routing, cloud deployment, and dev-to-production—and define a focused set of workflows. Done means the selected examples clearly compare container-based and wasmCloud-based applications.