Render icon previews in doc comments

[MrGVSV]

Adds the ability to have icons rendered in the doc comments of their respective type.

I put it behind a default render feature in case anyone using this crate locally wants to opt-out of this behavior. But if it's better to not be a default feature or not be a feature at all, please let me know and I can change it!

Screenshots

Theme	Preview
Light
Dark
Ayu1

Footnotes

1. Definitely not the prettiest, however, I'm not sure there's a good way of swapping the color based on the theme. And we can't just add a stroke as some icons are purely stroke. ↩

[marc2332]

This is magic. I can't believe you actually did this

[marc2332]

I put it behind a default render feature in case anyone using this crate locally wants to opt-out of this behavior.

Good idea! Although I would probably name the feature another way, render sounds too generic. What about preview-icons ?

[MrGVSV]

I put it behind a default render feature in case anyone using this crate locally wants to opt-out of this behavior.

Good idea! Although I would probably name the feature another way, render sounds too generic. What about preview-icons ?

Yeah that's probably a better name. I'll update it!

[MrGVSV]

Sorry for the delay! I updated the feature name :)

[marc2332]

Hold on a second, having a crate feature doesn't make sense because it's in the codegen crate, which is not used by the users, hence it's kinda pointless. I'd say we remove it and just ship the preview icons always

[marc2332]

It would be cool if we could have conditional docs but we can't due to rust-lang/rust#1998