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

* refactor: rename controllers to handlers and handlers to helpers

* fmt

src/handlers/channels/CHANNEL_PINS_UPDATE.ts

@@ -0,0 +1,19 @@
+import { eventHandlers } from "../../bot.ts";
+import {
+  DiscordChannelPinsUpdateEvent,
+  DiscordPayload,
+} from "../../types/mod.ts";
+import { cacheHandlers } from "../../cache.ts";
+
+export async function handleChannelPinsUpdate(data: DiscordPayload) {
+  const payload = data.d as DiscordChannelPinsUpdateEvent;
+
+  const channel = await cacheHandlers.get("channels", payload.channel_id);
+  if (!channel) return;
+
+  const guild = payload.guild_id
+    ? await cacheHandlers.get("guilds", payload.guild_id)
+    : undefined;
+
+  eventHandlers.channelPinsUpdate?.(channel, guild, payload.last_pin_timestamp);
+}