Examine source code of Live Bubbles

{
  "name": "Live Bubbles",
  "version": "0.0.12",
  "description": "Add the Twitch sidebar to YouTube.",
  "key": "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA17a/611f2EEqQIQW89pLPJnRFq7QA+iomWFcVmh0E6ct3SwfiliL2CZ0+HJolx4VgpnYmlox8zROSeowZX6QQZW6mivMdi5V+BD9IkQbMp9U5k+GMysRZbRyxxcjJYdK9/XFnhW2mieRftI1YLI8qmMuBYUbL8oPu7a3fQl8/zg7Ev9K5Y0IkF/+du5DxzNofwz4t169fcYxrJ673mjhg0A1gnGqsRFR9wNNyMbYPYSbLjApmA53GpFGB6xp7P/R21Pw3Cov3Apq4dLfY8DvoBsAdJxtAPyYgufEs6TddV4wBhlTytdo8ogTcyJRAVJgNfRab+4pw+KDVyjNl8S5MwIDAQAB",
  "homepage_url": "https://github.com/circuitwarden/livebubbles-extension",
  "action": {
    "default_popup": "popup.3e8905c2.html"
  },
  "host_permissions": [
    "*://*.youtube.com/*"
  ],
  "manifest_version": 3,
  "minimum_chrome_version": "100",
  "browser_specific_settings": {
    "gecko": {
      "id": "livebubbles_ff@circuitwarden.com",
      "strict_min_version": "109.0"
    }
  },
  "icons": {
    "128": "icon.c9b6e627.png"
  },
  "permissions": [
    "storage",
    "identity"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://www.youtube.com/*",
        "*://youtube.com/*"
      ],
      "exclude_matches": [
        "*://*.music.youtube.com/*",
        "*://m.youtube.com/*"
      ],
      "js": [
        "content.70a01fb4.js",
        "popup.de9f40f8.js"
      ],
      "css": [
        "content.699ca3cc.css",
        "popup.62837fd3.css"
      ],
      "run_at": "document_end"
    }
  ],
  "externally_connectable": {
    "matches": [
      "*://*.youtube.com/*"
    ]
  },
  "background": {
    "scripts": [
      "background.a054f291.js"
    ]
  }
}