fix: Make this library executable with npx

Fixes eclipse-che/che#20780

Change-Id: If721ccc4c53f001f28e6522695ab219e71c0ec1b
Signed-off-by: Florent Benoit <fbenoit@redhat.com>

tools/devworkspace-handler/package.json

@@ -3,6 +3,8 @@
   "version": "0.0.1",
   "private": false,
   "description": "Handle management of che-theia-plugins and devWorkspace templates",
+  "main": "lib/entrypoint.js",
+  "bin": "lib/entrypoint.js",
   "publishConfig": {
     "access": "public"
   },
@@ -37,11 +39,13 @@
     "@devfile/api": "latest",
     "axios": "0.21.2",
     "inversify": "^5.0.1",
+    "fs-extra": "^9.1.0",
     "js-yaml": "^4.0.0",
     "jsonc-parser": "^3.0.0",
     "reflect-metadata": "^0.1.13"
   },
   "devDependencies": {
+    "@types/fs-extra": "^9.0.11",
     "rollup": "^2.44.0"
   },
   "jest": {

tools/devworkspace-handler/src/entrypoint.ts

@@ -1,3 +1,5 @@
+#!/usr/bin/env node
+/* eslint-disable header/header */
 /**********************************************************************
  * Copyright (c) 2021 Red Hat, Inc.
  *