Examine source code of LeetCode to GitHub Sync

{
  "manifest_version": 2,
  "name": "LeetCode to GitHub Sync",
  "version": "1.0.0",
  "description": "Automatically commits your accepted LeetCode submissions to a GitHub repository, named as <question-number>-<question-title>.<ext>.",
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "permissions": [
    "storage",
    "notifications",
    "https://leetcode.com/*",
    "https://api.github.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "content_scripts": [
    {
      "matches": [
        "https://leetcode.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start",
      "all_frames": false
    }
  ],
  "web_accessible_resources": [
    "inject.js"
  ],
  "browser_action": {
    "default_title": "LeetCode to GitHub Sync",
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icons/icon-48.png"
    }
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "leetcode-github-sync@local.ext",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "websiteContent"
        ],
        "optional": []
      }
    }
  }
}