Examine source code of Medusa Adder

{
  "manifest_version": 2,
  "name": "Medusa Adder",
  "version": "1.0.3",
  "description": "Add TV shows from Simkl, TMDB, or IMDb directly to your Medusa instance.",
  "icons": {
    "16": "icons/Medusa-Adder.svg",
    "32": "icons/Medusa-Adder.svg",
    "48": "icons/Medusa-Adder.svg",
    "128": "icons/Medusa-Adder.svg"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "medusa-adder@mgdn.nl",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "websiteContent"
        ]
      }
    }
  },
  "browser_action": {
    "default_icon": "icons/Medusa-Adder.svg",
    "default_popup": "popup/popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "permissions": [
    "storage",
    "tabs",
    "activeTab",
    "contextMenus",
    "notifications"
  ],
  "optional_permissions": [
    "*://*/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://simkl.com/tv/*",
        "*://www.themoviedb.org/tv/*",
        "*://themoviedb.org/tv/*",
        "*://www.imdb.com/title/*",
        "*://imdb.com/title/*"
      ],
      "js": [
        "content-script.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": true,
    "browser_style": true
  }
}