Add cleanup command

src/commands/cleanup.js

@@ -0,0 +1,19 @@
+const { Command } = require('discord-akairo');
+
+class CleanupCommand extends Command {
+    constructor() {
+        super('cleanup', {
+            aliases: ['cleanup'],
+            ownerOnly: true,
+            clientPermissions: ['SEND_MESSAGES']
+        });
+    }
+
+    async exec(message) {
+        await message.util.send('Cleaning up...');
+        await this.client.languageHandler.cleanup();
+        await message.util.send('Cleaned up!');
+    }
+}
+
+module.exports = CleanupCommand;