Examine source code of QR code generator pro

{
  "manifest_version" : 3 ,
  "name" : "__MSG_extName__" ,
  "description" : "__MSG_extDescription__" ,
  "version" : "3.0.0",
  "default_locale" : "en" ,
  "icons" : {
    "16" : "icons/icon-16.png",
    "32" : "icons/icon-32.png",
    "48" : "icons/icon-48.png",
    "96" : "icons/icon-96.png",
    "128" : "icons/icon-128.png"
  },
  "action" : {
    "default_title" : "__MSG_extName__" ,
    "default_icon" : {
      "16" : "icons/icon-16.png",
      "32" : "icons/icon-32.png",
      "48" : "icons/icon-48.png",
      "96" : "icons/icon-96.png",
      "128" : "icons/icon-128.png"
    }
  },
  "sidebar_action": {
    "default_title" : "__MSG_extName__" ,
    "default_panel": "panel/panel.html",
    "default_icon" : {
      "16" : "icons/icon-16.png",
      "32" : "icons/icon-32.png",
      "48" : "icons/icon-48.png",
      "96" : "icons/icon-96.png",
      "128" : "icons/icon-128.png"
    },
    "open_at_install": false
  },
  "background" : {
    "scripts" : [
      "background/background.js" 
    ]
  },
  "permissions" : [
    "storage" ,
    "tabs" ,
    "clipboardWrite" 
  ],
  "content_security_policy" : {
    "extension_pages": "script-src 'self'; object-src 'self';"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "qr-toolkit@mo.dev",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}