Examine source code of bot-isaura

{
  "manifest_version": 2,
  "name": "bot.isaura",
  "version": "1.0.1",
  "description": "1. Purpose: allow user to check the tab list(it look like the task manager in chrome)\n2. There is no interface on current add-on but user can check the tab list from https://bot.es6.vn/tool/watch/count",
  "browser_specific_settings": {
    "gecko": {
      "id": "{cdc26036-32c4-410b-ac31-036e56e33008}"
    }
  },
  "icons": {
    "48": "icons/bot48x48.png"
  },
  "permissions": [
    "tabs",
    "activeTab"
  ],
  "background": {
    "scripts": [
      "/scripts/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "/scripts/jquery-3.5.1.min.js",
        "/scripts/browser/browser.start.js"
      ]
    }
  ]
}