Examine source code of Pro DoubleClick

{
  "manifest_version": 3,
  "name": "Pro DoubleClick",
  "version": "26.7.1",
  "description": "Double Click to open links in new tab (front or background); built with customization.",
  "icons": {
    "32": "asset/logo/icon_32.png",
    "48": "asset/logo/icon_48.png",
    "128": "asset/logo/icon_128.png"
  },
  "permissions": [
    "tabs",
    "activeTab",
    "storage"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "action": {
    "default_popup": "popup/popup.html"
  },
  "background": {
    "scripts": [
      "scripts/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "scripts/contentscripts.js"
      ],
      "run_at": "document_start"
    }
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "asset/icon-svg/*.svg"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "prodoubleclick@proxdev",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}