file_types array for application command options

[IllagerCaptain]

Currently, we have channel_types array to limit the types of channels allowed by a CHANNEL option, however, I may want to limit the allowed file types for an ATTACHMENT option type. So I am proposing file_types field which would be an array of file extensions allowed for an ATTACHMENT option. An example of an option that allows images only would be the following:

"type": 11,
"name": "image",
"description": "Upload an image",
"required": true,
"file_types": ["png", "jpg", "jpeg", "gif"]

[Shepard]

An example of an option that allows images only would be the following:

Or "image/*" 😉