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

* refactor: rename controllers to handlers and handlers to helpers

* fmt

src/handlers/guilds/GUILD_BAN_ADD.ts

@@ -0,0 +1,12 @@
+import { eventHandlers } from "../../bot.ts";
+import { DiscordPayload, GuildBanPayload } from "../../types/mod.ts";
+import { cacheHandlers } from "../../cache.ts";
+
+export async function handleGuildBanAdd(data: DiscordPayload) {
+  const payload = data.d as GuildBanPayload;
+  const guild = await cacheHandlers.get("guilds", payload.guild_id);
+  if (!guild) return;
+
+  const member = await cacheHandlers.get("members", payload.user.id);
+  eventHandlers.guildBanAdd?.(guild, payload.user, member);
+}