Examine source code of Infinity RT

{
  "manifest_version": 2,
  "name": "Infinity RT",
  "version": "1.3.1",
  "description": "Make RT great again!",
  "homepage_url": "https://github.com/gastbob40/infinity-rt",
  "icons": {
    "128": "icon_128.png"
  },
  "browser_action": {
    "default_title": "Infinity RT",
    "default_icon": {
      "48": "activated_48.png",
      "128": "activated_128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://tickets.cri.epita.fr/*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "content.css"
      ]
    }
  ],
  "permissions": [
    "storage",
    "webRequest",
    "https://tickets.forge.epita.fr/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{a37c0454-1bea-4616-898a-0745ab405b50}"
    }
  }
}