Now the Viewport render function is passed to the backend
I was needed to update the demo because now Window::show() needs a Fn before was a FnOnce
I changed from FnOnce to Fn because we want the window to be rendered separately from the main window
That means now the variabiles that we are moving to window need to be Rc or Arc!
This is making harder to use `Window`!
I'am waiting for more ideas!
In eframe now any Window has a property render that stores the current window render function, if has not function App::update will be called insted!
New problems in any other window excluding the main window we have no mouse input, i don't know why!
Now every window has embedded to false by default, for testing purposes!
* Replace tracing crate with log
It's just so much simpler to use
* Add `bacon wasm` job
* eframe: add a WebLogger for piping log events to the web console
