Windows as entities

[fowenix]

Objective

Draft PR of #4530

[alice-i-cecile]

separating Window into components seems pretty simple except for Window::set_resolution and Window::set_scale_factor_override that use requested_width/requested_height

[nicopap]

I love the idea behind the PR. I like the code at least. Looking forward to the completion of the PR.

Just throwing ideas: What about deriving Reflect on the window components so that it's possible to save the window state as easily as the rest of the ECS?

[alice-i-cecile]

separating Window into components seems pretty simple except for Window::set_resolution and Window::set_scale_factor_override that use requested_width/requested_height

@fowenix for this, I think I would probably just do a Resolution component:

struct Resolution {
   physical_width: u32,
   physical_height: u32,
   scale_factor: f64,
}

And then move those methods to methods on the new Resolution component :)

[fowenix]

Gonna rework this some more and eventually reopen this from another branch instead of main