Examine source code of Gitd Download Manager

{
  "manifest_version": 2,
  "name": "Gitd Download Manager",
  "short_name": "Gitd",
  "description": "Gitd allows you to download only the files you want without having to download all of the public repository.",
  "version": "1.0.0",
  "homepage_url": "https://github.com/git-download-manager/gitd-extension",
  "permissions": [
    "https://api.gitdownloadmanager.com/*",
    "webNavigation"
  ],
  "icons": {
    "16": "icons/16.png",
    "32": "icons/32.png",
    "128": "icons/128.png"
  },
  "author": "Uretgec",
  "content_scripts": [
    {
      "matches": [
        "*://github.com/*",
        "*://gitlab.com/*",
        "*://bitbucket.org/*"
      ],
      "css": [
        "gitdStyles.css"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "*://github.com/*",
        "*://gitlab.com/*",
        "*://bitbucket.org/*"
      ],
      "js": [
        "lib/templates.js",
        "contentScript.js"
      ],
      "run_at": "document_start"
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "web_accessible_resources": [
    "lib/alpine-scp.min.js",
    "lib/fflate.min.js",
    "lib/gitdmanager.js"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{6c591046-4e85-4d83-9d3e-ae7179cae575}"
    }
  }
}