Examine source code of cleanzoomtabs

{
  "name": "clearzoomtabs",
  "version": "1.1.0",
  "manifest_version": 2,
  "description": "Close zoom launch meeting tabs automatically",
  "permissions": [
    "tabs"
  ],
  "icons": {
    "48": "icons/48.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "browser_style": true,
    "default_icon": "icons/32.png",
    "default_title": "Clear Zoom launch meeting tabs"
  }
}