Add last-run file support

commands/util/command-last-run-import.js

@@ -0,0 +1,34 @@
+const Command = require('../../structures/Command');
+
+module.exports = class CommandLastRunImportCommand extends Command {
+	constructor(client) {
+		super(client, {
+			name: 'command-last-run-import',
+			aliases: [
+				'cmd-lr-import',
+				'cmd-last-run-import',
+				'command-lr-import',
+				'import-cmd-lr',
+				'import-cmd-last-run',
+				'import-command-lr',
+				'import-command-last-run'
+			],
+			group: 'util',
+			memberName: 'command-last-run-import',
+			description: 'Imports a command last run JSON file.',
+			details: 'Only the bot owner(s) may use this command.',
+			ownerOnly: true,
+			guarded: true
+		});
+	}
+
+	run(msg) {
+		try {
+			const results = this.client.importLastRun();
+			if (!results) return msg.reply('The JSON file provided is invalid.');
+			return msg.say('Successfully imported command last run.');
+		} catch (err) {
+			return msg.reply(`Could not read \`command-last-run.json\`: \`${err.message}\`.`);
+		}
+	}
+};