Examine source code of SoulMu Helper

{
  "content_scripts": [
    {
      "css": [
        "style.css"
      ],
      "js": [
        "reset.js"
      ],
      "matches": [
        "*://soulmu.pl/index.php?strona=mupageaccount/reset*",
        "*://www.soulmu.pl/index.php?strona=mupageaccount/reset*"
      ]
    },
    {
      "css": [
        "style.css"
      ],
      "js": [
        "jquery-3.5.1.min.js",
        "main.js"
      ],
      "matches": [
        "*://soulmu.pl/index.php?strona=mupageaccount/*",
        "*://www.soulmu.pl/index.php?strona=mupageaccount/*"
      ]
    }
  ],
  "description": "Dodatek do tworzenia buildów postaci i automatycznego dodawania punktów po resecie.",
  "icons": {
    "16": "icons/16.png",
    "48": "icons/48.png",
    "128": "icons/128.png"
  },
  "manifest_version": 2,
  "name": "SoulMu Helper",
  "permissions": [
    "*://soulmu.pl/index.php?strona=mupageaccount/*",
    "*://www.soulmu.pl/index.php?strona=mupageaccount/*",
    "storage"
  ],
  "short_name": "SoulMu",
  "version": "0.12",
  "web_accessible_resources": [
    "icons/*"
  ]
}