Implement cli version of z2m (#5034)

cli.js

@@ -0,0 +1,4 @@
+#!/usr/bin/env node
+const path = require('path');
+process.env['ZIGBEE2MQTT_DATA'] = process.env['ZIGBEE2MQTT_DATA'] || path.join(process.env['HOME'], '.z2m');
+require('./index');

package.json

@@ -75,5 +75,8 @@
     "collectCoverageFrom": [
       "lib/**"
     ]
+  },
+  "bin": {
+    "zigbee2mqtt": "./cli.js"
   }
 }