Make Demo router Relative and optional

[lixaotec]

Dear,

It would be nice to have demo features using relatives paths, and be a optional module, so we can use it as a boilerplate and having the module enabled only when is development mode, for devs references.
like localhost/demo

When in prod , demo could be out of building

What do you think?

Thanks

[cagataycivici]

Please use github discussions or Discord for feedback and questions, thank you.