feat: collect 2 level files info when ls

* change cli dir to /usr/local/lib/cli
* refactor cli to multiple files
* add handleCommand and listeners pattern

packages/cli/package.json

@@ -3,5 +3,7 @@
   "version": "1.0.0",
   "main": "index.js",
   "license": "MIT",
-  "dependencies": {}
+  "dependencies": {
+    "chokidar": "^3.5.3"
+  }
 }