In the docs for iced add links to the widgets in iced_native

[SpyrosRoum]

For example, the doc for the button widget has this text only:

A widget that produces a message when clicked.

This is an alias of an iced_native button with an iced_wgpu::Renderer.

That means that I have to search and find the docs for iced_native and find the widgets there but I think it would make sense to at least have a link that can take you to the iced_native version of the widget

[hecrj]

We should figure out why docs.rs isn't linking the type alias automatically.

If I run cargo doc --no-deps --all locally, I do get a proper link.

[Imberflur]

strangely in the iced_wgpu docs where I assume it gets these docs from there is a link https://docs.rs/iced_wgpu/0.2.2/iced_wgpu/widget/button/type.Button.html

[hecrj]

We may need to add iced_native as an explicit dependency of iced.

[hecrj]

This has been fixed since #1328.