message: add append / insert commands
diff: {
  "name": "@seleniumhq/selenium-ide",
  - "version": "4.0.0-alpha.22",
  + "version": "4.0.0-alpha.23",
  "private": true,
  "description": "Selenium IDE electron app",
  "author": "Todd <tarsitodd@gmail.com>",
  