Consider adding example 11 that demonstrates a bottle app in a class being used with eel

[damies13]

Is your feature request related to a problem? Please describe.

I wanted to have an api class that I could add as a bottle to eel, but couldn't find any documentation or how to do this.

I did find Issue #180, which gave me the impression that I'd need to modify eel to do what I needed, but after some trial and error i found eel works as is for what I need 👍 I thought the example I created as my POC might be useful for others, so have attached it here

Describe the solution you'd like
Consider adding my example to the examples

11 - classy_app_routes.zip