Examine source code of GitHub Clone Helper

{
  "manifest_version": 2,
  "name": "GitHub Clone Helper",
  "version": "1.0",
  "description": "Adds 'git clone' before HTTPS and SSH clone URLs on GitHub.",
  "icons": {
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "permissions": [
    "clipboardWrite",
    "activeTab"
  ],
  "browser_action": {
    "default_icon": {
      "16": "images/icon16.png",
      "48": "images/icon48.png",
      "128": "images/icon128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://github.com/*"
      ],
      "js": [
        "contentScript.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{2ced4404-8a4e-4992-9517-6512a0919867}"
    }
  }
}