feat: add support for role icons

[iShibi]

Please describe the changes this PR makes and why it should be merged:

Starts work on role icons:

• Document role icons discord/discord-api-docs#3815
• Document ROLE_ICONS discord/discord-api-docs#3847

Status and versioning classification:

• I know how to update typings and have done so
• This PR changes the library's interface (methods or parameters added)

[ImRodry]

Small nitpicks as I know this is still a WIP

[NotSugden]

can't you also pass null for the role icon? if so docs should be updated

[Lulalaby]

can't you also pass null for the role icon? if so docs should be updated

Yes u can

[ImRodry]

New upstream PR: discord/discord-api-docs#3847

[iShibi]

This is ready for review ✨

[Lulalaby]

hi so i guess it's worth mentioning that, so i'm using this and if I .setIcon() to an animated emoji, absolutely nothing happens, not even an error. But in discord ui you can pick an animated emoji and it'll use the first frame.

yeah, that's a client thing.
But yeah, discord seems like not to throw errors

[ImRodry]

hi so i guess it's worth mentioning that, so i'm using this and if I .setIcon() to an animated emoji, absolutely nothing happens, not even an error. But in discord ui you can pick an animated emoji and it'll use the first frame.

Well the fact that the url property on an emoji is a getter and not a function like it is everywhere else makes it hard to add a fix for this. We could just get the png image by calling the CDN endpoint directly because that way we’d always make sure to get the first frame of the emoji

[ghost]

pardon my stupidity (i was actually setting it to undefined); it works fine. well transparency is lost but yeah

[advaith1]

unicode_emoji is now the actual emoji, not a text name

[iCrawl]

This needs a rebase.

[iCrawl]

This needs a rebase.

[iShibi]

Rebased 😓