Add community video tutorial: Cloudflare Tunnel (Quick Tunnel + Permanent custom domain setup)

### Proposed changes

- Add a “Video tutorial (community)” callout/link on the Cloudflare Tunnel docs page for beginners who want to expose localhost publicly without port forwarding.
- The tutorial covers both:

1. Quick Tunnel (temporary trycloudflare.com URL)
2. Permanent tunnel (custom domain/subdomain + config.yml ingress + credentials file)
- Video (YouTube): https://youtu.be/etluT8UC-nw

### Why this is useful:

- Many developers search for “make localhost public” / “no port forwarding” and need a visual step-by-step guide for first-time setup.
- The flow is aligned with the docs and shows the full end-to-end workflow (install → run quick tunnel → onboard domain → create tunnel → route DNS → config.yml → run)

### Subject Matter

Beginner video tutorial for Cloudflare Tunnel: expose localhost publicly (Quick Tunnel) and set up a permanent custom-domain tunnel with config.yml ingress rules + credentials file.

### Content Location

Suggested placement: add a small “Video tutorial (community)” callout/link near the top or within the “Create a local tunnel / Local management” section.

Target docs page:

- https://developers.cloudflare.com/cloudflare-one/networks/connectors/cloudflare-tunnel/do-more-with-tunnels/local-management/create-local-tunnel/

Optional additional placement (if relevant):

- Cloudflare Tunnel “Get started” / “Install cloudflared” / “Run a tunnel” pages (where beginners land first)

### Additional information

Notes:

- Language: English (highly visual, step-by-step; useful for global audience)

- Covers Mac/Windows/Linux install commands and shows common gotchas (temporary URL limitation, machine must stay online for access).

- Please consider this as a small token of appreciation for the Cloudflare community. I genuinely love Cloudflare, and I made this beginner-friendly tutorial to help new users get started with Cloudflare Tunnel easily.