chore: add update-copyright script

Author: lc-soft

package.json

@@ -9,7 +9,8 @@
   },
   "scripts": {
     "build-changelog": "conventional-changelog -p angular -i CHANGELOG.md -s -r 0",
-    "update-changelog": "conventional-changelog -p angular -i CHANGELOG.md -s"
+    "update-changelog": "conventional-changelog -p angular -i CHANGELOG.md -s",
+    "update-copyright": "node scripts/add-copyright.js"
   },
   "repository": {
     "type": "git",