chore: add example direclty to use current code

Author: Kos-M

example/index.js

@@ -0,0 +1,18 @@
+const Worker = require('../index');
+// const Worker = require('queue-xec-worker')
+
+// set here only for example , transferEncryptToken
+process.env.transferEncryptToken = '00000000000000000000000000000000';
+process.env.token = 'demoCHannel0';
+process.env.LOG_LEVEL = 'debug';
+
+async function run() {
+  // eslint-disable-next-line no-unused-vars
+  const work1 = new Worker({
+    token: process.env.token, // token generated from Master
+    name: 'worker_1',
+    loglevel: process.env.LOG_LEVEL, // off -> info -> warn -> error -> debug
+    transferEncryptToken: process.env.transferEncryptToken, // token generated from Master
+  }); // work1 instance is ready for incoming new tasks
+}
+run();

example/package.json

@@ -0,0 +1,10 @@
+{
+  "name": "example",
+  "version": "1.0.0",
+  "main": "index.js",
+  "license": "MIT",
+  "dependencies": {
+    "big.js": "^6.2.1",
+    "moment": "^2.29.4"
+  }
+}