Examine source code of Tabs Switcher

{
  "manifest_version": 3,
  "name": "hotkey",
  "version": "1.6",
  "description": "firefox增强插件",
  "icons": {
    "32": "img/32.png",
    "64": "img/64.png",
    "128": "img/128.png"
  },
  "content_scripts": [
    {
      "run_at": "document_start",
      "match_origin_as_fallback": true,
      "all_frames": true,
      "js": [
        "js/v3_api.js",
        "js/constant.js",
        "js/inject_all.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    },
    {
      "run_at": "document_start",
      "match_origin_as_fallback": true,
      "js": [
        "js/inject.js"
      ],
      "css": [
        "inject.css"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "action": {
    "default_icon": {
      "16": "img/icon.png",
      "32": "img/icon.png"
    }
  },
  "background": {
    "scripts": [
      "js/v3_api.js",
      "js/constant.js",
      "js/bg.js"
    ]
  },
  "permissions": [
    "activeTab",
    "tabs",
    "menus",
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "v3_hotkey.ffp@61linux.com",
      "strict_min_version": "109.0"
    }
  }
}