[Feature Request] ApplicationCommandOptionType should have ATTACHMENT support

[LiberaTeMetuMortis]

What do you want to request?
ApplicationCommandOptionType should have ATTACHMENT support

Do you have any solutions?
We can ATTACHMENT to ApplicationCommandOptionType but I don't have any solution about how can we get that attachment on interaction

Do you have anything to tell us about your request?
No

[thecodekitchen]

If we could get this feature in the deploy.ts module, it would be incredibly helpful for the bot I'm trying to build. Please let me know if this gets implemented.

[Helloyunho]

Closing this since #343 implements ATTACHMENT option type.