Add warning command

src/utils/channel-utils.ts

@@ -0,0 +1,8 @@
+import { Channel, GuildBasedChannel, GuildChannel, GuildTextBasedChannel, TextBasedChannel, VoiceBasedChannel } from 'discord.js';
+import { Database } from '../shared/Database';
+
+export async function channelIsInStaffCategory(channel: GuildBasedChannel) {
+  const staffCategories = await Database.getGuildStaffCategories(channel.guildId);
+
+  return staffCategories.includes(channel.parentId!);
+}