[feat] add a macro to help using image as tray icon from rust api directly

[Legend-Master]

Describe the problem

Currently to use an image (png or ico) in system tray, you need to enable image-png or image-ico feature which embeds image crate to the final app, and to not do that, you need to either transform your image to raw format or create it through config file

Describe the solution you'd like

Add a macro to do this, like what we had for config files

Alternatives considered

No response

Additional context

No response

[amrbashir]

I like the idea, I don't generally appreciate including image crate in the final app. Do you have an example of how the API should look like?

[Legend-Master]

Maybe something like tray_icon_image!("../icons/tray_icon.png")?

[amrbashir]

I see, I thought it involved more tray related code but I guess now that I understand the intention, this could be more than just for tray so I'd suggest just calling it image!() so it can be used also with windows and menus

[Legend-Master]

Makes sense, and since those images are fairly small, it should be better than shipping the image crate (32 x 32 x 4 is around 4 KB), I think we need to also improve the docs a little bit, I thought it's going to just embed the image but it actually is raw pixels, and the image I was using is like 256 x 256, it's just 4 KB for a png, but raw pixels are quite big, should probably be more clear about what it's doing