feat: version command

Author: fengkx

source/index.ts

@@ -1,6 +1,7 @@
 import Telegraf from 'telegraf';
 import { fork } from 'child_process';
 import { join } from 'path';
+import * as pkg from '../package.json';
 import send from './utils/send';
 import logger from './utils/logger';
 import errors from './utils/errors';
@@ -250,6 +251,10 @@ bot.action(
     rss
 );
 
+bot.command('version', async (ctx) => {
+    ctx.reply(`${pkg.version}`);
+});
+
 bot.launch();
 
 async function startFetchProcess(restartTime: number): Promise<void> {