Examine source code of LeetcodeEnhancer

{
  "manifest_version": 3,
  "name": "leetcode-enhancer",
  "description": "A browser extension to improve the LeetCode experience",
  "version": "0.0.6",
  "icons": {
    "16": "icons/16.png",
    "32": "icons/32.png",
    "48": "icons/48.png",
    "128": "icons/128.png"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "patchMonaco.js"
      ],
      "matches": [
        "https://leetcode.com/*"
      ],
      "use_dynamic_url": true
    }
  ],
  "permissions": [
    "search",
    "storage"
  ],
  "key": "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvPFgrghAOnN6g1fya9CTAxS6KT6rYS3ySukjRV3lP5pQXA8uV9Vn1zHsKTKQB68pffV2ruvcidbFZ5AvBAbKgxsm/qHHydIrIvoLBc2yGey3ZdtEpIlkILpzIjOPjjeJwL1ys7jaSQDyEvOaf2ChNT4ilG6UWswc6FlXQjMbL+w6ySiO/TBwztLDqSNhmvCX8M9zXIQvXWnUD4fLEL45eH4PZeY49sRDls4ZxldVWIstIUf2THurpVQ28v4048k8KlLjcPkKg98x5axxi/kOMhtgprf1MLqlN0w5bCsScmS5fcQpSewSBFqFuKCNSnD4b+UuW0SguVTC8UQ1nJJiTwIDAQAB",
  "browser_specific_settings": {
    "gecko": {
      "id": "leetcode-enhancer@sbrjt",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_title": "Default Popup Title",
    "default_popup": "popup.html"
  },
  "options_ui": {
    "open_in_tab": false,
    "page": "options.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://leetcode.com/problems/*"
      ],
      "css": [
        "content-scripts/content.css"
      ],
      "js": [
        "content-scripts/content.js"
      ]
    }
  ]
}