finish organization event/command & add guild command in folder commands

app/events/guildMemberRemove.js

@@ -0,0 +1,26 @@
+const { Events } = require("discord.js");
+const db = require("../db");
+
+module.exports = {
+  name: Events.GuildMemberRemove,
+  async execute(client, member) {
+    db.get(
+      "SELECT enabled, channel_id, message FROM goodbye_config WHERE guild_id = ?",
+      [member.guild.id],
+      (err, row) => {
+        if (err || !row || !row.enabled) return;
+  
+        let msg = row.message;
+  
+        msg = msg
+          .replace("{user}", member.user.username)
+          .replace("{server}", member.guild.name);
+  
+        const channel = member.guild.channels.cache.get(row.channel_id);
+        if (channel) {
+          channel.send(msg);
+        }
+      }
+    );
+  },
+};