Prefer Display over Debug formatting

[BenjaminBrienen]

What it does

Suggest when Display ("{}") can be used instead of Debug ("{:?}").

Advantage

Makes things like bevyengine/bevy#16112 more long-term maintainable

Drawbacks

Debug might be intentional (often). Workaround would be to make the suggestion opt-in per-struct.

Example

println!("{:?}", 100);

Could be written as:

println!("{}", 100);