Include documentation on hosting Pode using NGINX

[Badgerati]

Describe the Change

Under /docs/Hosting, a new NGINX.md should be written that includes documentation on how to host Pode using NGINX.

I'm not overly familiar with NGINX, but I imagine it'll be similar to IIS+Pode, where IIS proxies requests to a Pode server running on localhost.

The documentation should include:

• Simple example of NGINX config files
• Examples of HTTP and HTTPS
• Potentially an example of Pode+Docker with NGINX

If there's anything I might have missed that would be useful, feel free to comment 😄