refactor: rename controllers to handlers and handlers to helpers (#660)

* refactor: rename controllers to handlers and handlers to helpers

* fmt

src/handlers/guilds/GUILD_INTEGRATIONS_UPDATE.ts

@@ -0,0 +1,17 @@
+import { eventHandlers } from "../../bot.ts";
+import {
+  DiscordGuildIntegrationsUpdateEvent,
+  DiscordPayload,
+} from "../../types/mod.ts";
+import { cacheHandlers } from "../../cache.ts";
+
+export async function handleGuildIntegrationsUpdate(
+  data: DiscordPayload,
+) {
+  const payload = data.d as DiscordGuildIntegrationsUpdateEvent;
+
+  const guild = await cacheHandlers.get("guilds", payload.guild_id);
+  if (!guild) return;
+
+  eventHandlers.guildIntegrationsUpdate?.(guild);
+}