Examine source code of Quicker Connector

{
  "name": "Quicker Connector",
  "version": "1.0.6",
  "manifest_version": 3,
  "description": "Native message connector with Quicker application",
  "background": {
    "scripts": [
      "./background/background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "addon@getquicker.net"
    }
  },
  "web_accessible_resources": [
    {
      "resources": [
        "./content/styles.css"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "./content/content.js"
      ],
      "css": [
        "./content/styles.css"
      ],
      "all_frames": true
    }
  ],
  "icons": {
    "128": "./icons/128.png"
  },
  "action": {
    "default_popup": "./popup/popup.html"
  },
  "permissions": [
    "nativeMessaging",
    "tabs",
    "contextMenus",
    "storage",
    "scripting",
    "activeTab",
    "cookies",
    "downloads"
  ],
  "optional_permissions": [
    "bookmarks",
    "browsingData",
    "history",
    "sessions",
    "userScripts"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "homepage_url": "https://getquicker.net"
}