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

* refactor: rename controllers to handlers and handlers to helpers

* fmt

src/handlers/messages/MESSAGE_DELETE.ts

@@ -0,0 +1,16 @@
+import { eventHandlers } from "../../bot.ts";
+import { DiscordPayload, MessageDeletePayload } from "../../types/mod.ts";
+import { cacheHandlers } from "../../cache.ts";
+
+export async function handleMessageDelete(data: DiscordPayload) {
+  const payload = data.d as MessageDeletePayload;
+  const channel = await cacheHandlers.get("channels", payload.channel_id);
+  if (!channel) return;
+
+  eventHandlers.messageDelete?.(
+    { id: payload.id, channel },
+    await cacheHandlers.get("messages", payload.id),
+  );
+
+  await cacheHandlers.delete("messages", payload.id);
+}