Examine source code of Flowcite extension

{
  "name": "__MSG_appName__",
  "description": "__MSG_appDescription__",
  "version": "0.4.3",
  "short_name": "__MSG_appShortName__",
  "manifest_version": 2,
  "default_locale": "en",
  "icons": {
    "16": "images/icon-16.png",
    "128": "images/icon-128.png"
  },
  "background": {
    "scripts": [
      "scripts/background.js"
    ]
  },
  "permissions": [
    "storage",
    "<all_urls>",
    "activeTab"
  ],
  "content_scripts": [
    {
      "js": [
        "scripts/jquery.js",
        "scripts/loadsh.js",
        "scripts/xml2json.js",
        "scripts/contentscript.js"
      ],
      "matches": [
        "*://*/*"
      ],
      "run_at": "document_end"
    }
  ],
  "web_accessible_resources": [
    "pages/sign-in.html"
  ],
  "browser_action": {},
  "commands": {
    "toggle-feature": {
      "suggested_key": {
        "default": "Ctrl+Space"
      },
      "description": "Send a 'toggle-feature' event"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{ee2f17c7-3c2d-4757-a819-2216442dc21e}"
    }
  }
}