types: add gateway types

src/handlers/webhooks/WEBHOOKS_UPDATE.ts

@@ -1,7 +1,11 @@
 import { eventHandlers } from "../../bot.ts";
+import {
+  DiscordGatewayPayload,
+  DiscordWebhooksUpdate,
+} from "../../types/gateway.ts";
 
-export function handleWebhooksUpdate(data: DiscordPayload) {
-  const options = data.d as WebhookUpdatePayload;
+export function handleWebhooksUpdate(data: DiscordGatewayPayload) {
+  const options = data.d as DiscordWebhooksUpdate;
   eventHandlers.webhooksUpdate?.(
     options.channel_id,
     options.guild_id,