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

* refactor: rename controllers to handlers and handlers to helpers

* fmt

src/handlers/channels/CHANNEL_UPDATE.ts

@@ -0,0 +1,16 @@
+import { eventHandlers } from "../../bot.ts";
+import { ChannelCreatePayload, DiscordPayload } from "../../types/mod.ts";
+import { structures } from "../../structures/mod.ts";
+import { cacheHandlers } from "../../cache.ts";
+
+export async function handleChannelUpdate(data: DiscordPayload) {
+  const payload = data.d as ChannelCreatePayload;
+  const cachedChannel = await cacheHandlers.get("channels", payload.id);
+
+  const channelStruct = await structures.createChannelStruct(payload);
+  await cacheHandlers.set("channels", channelStruct.id, channelStruct);
+
+  if (!cachedChannel) return;
+
+  eventHandlers.channelUpdate?.(channelStruct, cachedChannel);
+}