Added message delete event.

events/messagedelete.js

+module.exports = {
+    messagedelete: (client, connection, Discord) => {
+        client.on('messageDelete', async (message) => {
+        if(message.author.id == client.user.id) {
+            return;
+        };
+        const channeldb = await new Promise((resolve, reject) => {
+            connection.query(`SELECT channel FROM log_channel WHERE guild ='${message.guild.id}'`, function (err, result) {
+                if (err)
+                    reject(err);
+                    resolve(result);
+            });
+        });
+        let channelvariable;
+        if (channeldb.length < 1) {
+            return;
+        } else {
+            channelvariable = channeldb[0].channel;
+        };
+        if (message.content == ""){
+            return;
+        };
+        const channel = message.guild.channels.cache.get(channelvariable);
+        const embed = new Discord.MessageEmbed()
+        .setAuthor(`Message Deleted!`)
+        .addField(`Message content:`,`${message.content}`)
+        .addField(`Channel:`,`<#${message.channel.id}> (\`${message.channel.name}\`)`)
+        .addField(`User:`, `${message.author} (${message.author.tag})`)
+        .setTimestamp()
+        .setColor("RANDOM");
+        channel.send(embed)
+    });
+  }
+};
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