Examine source code of ECHTSTERN

{
  "manifest_version": 3,
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "default_locale": "de",
  "version": "1.2.5",
  "browser_specific_settings": {
    "gecko": {
      "id": "echtstern@echtstern.de",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "browsingActivity",
          "websiteContent"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "action": {
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    },
    "default_popup": "popup.html",
    "default_title": "__MSG_extensionName__"
  },
  "background": {
    "scripts": [
      "assets/background.js"
    ]
  },
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://google.com/maps*",
    "https://www.google.com/maps*",
    "https://*.google.com/maps*",
    "https://google.de/maps*",
    "https://www.google.de/maps*",
    "https://*.google.de/maps*",
    "https://echtstern.de/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://google.com/maps*",
        "https://www.google.com/maps*",
        "https://*.google.com/maps*",
        "https://google.de/maps*",
        "https://www.google.de/maps*",
        "https://*.google.de/maps*"
      ],
      "js": [
        "assets/content.js"
      ],
      "run_at": "document_idle"
    }
  ]
}