fix(bot,rest,types)!: attachment sending (#2917)

* fix(bot,rest,types)!: attachment sending

* apply code suggestions

* forgot to add that

* this should not be there i guess

* maybe spell it right

* actually revert the attachments rename

* Change how method gets passed

* more stuff

* improve function name

packages/bot/src/typings.ts

@@ -104,8 +104,8 @@ export interface BotInteractionCallbackData {
   embeds?: Embed[]
   /** Allowed mentions for the message */
   allowedMentions?: AllowedMentions
-  /** The contents of the file being sent */
-  file?: FileContent | FileContent[]
+  /** The contents of the files being sent */
+  files?: FileContent[]
   /** The customId you want to use for this modal response. */
   customId?: string
   /** The title you want to use for this modal response. */