Examine source code of Plasma Integration

{
  "manifest_version": 3,
  "name": "Plasma Integration",
  "short_name": "Plasma",
  "description": "Provides better integration with the KDE Plasma desktop.",
  "version": "2.1",
  "default_locale": "en",
  "author": "Kai Uwe Broulik <kde@privat.broulik.de>",
  "key": "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1Wz6JigIdPBxPJvYrnjuKM3X4YEaUHgyOW2TM1G1Maxook1HO8vLFGhBR7g3jEQ7Yw9PTa6ZAa8J/I9a/1EQz0Ssx2+m3R9SvJfdKSCrCth8nwMpB8V8I5EhiUoW57kM0v9r/18Buem5cBIo0EnSAVCbmNG95R5jtg62P4+LNGEwHk5L7RSblXUN2hhUwXty4A98EXD6T2Pnpu1m8nRF2B1t5AcspSMV5ECnL9x8kT5bup1gJo0FGTz6C+1huDNRaI3OY1YDWyvCVRFXlAhuFERTW6siMdghK++kYM43H7cvJMFYnVVuffD9WNRsUCI9V0SrqYbPre/2nEl+8VUXVwIDAQAB",
  "icons": {
    "16": "icons/plasma-16.png",
    "32": "icons/plasma-32.png",
    "48": "icons/plasma-48.png",
    "128": "icons/plasma-128.png"
  },
  "background": {
    "scripts": [
      "constants.js",
      "utils.js",
      "extension-utils.js",
      "extension-kdeconnect.js",
      "extension-mpris.js",
      "extension-downloads.js",
      "extension-tabsrunner.js",
      "extension-purpose.js",
      "extension-historyrunner.js",
      "extension.js"
    ],
    "service_worker": "service-worker.js"
  },
  "action": {
    "browser_style": true,
    "default_popup": "action_popup.html",
    "theme_icons": [
      {
        "light": "icons/plasma-dark-16.png",
        "dark": "icons/plasma-16.png",
        "size": 16
      },
      {
        "light": "icons/plasma-dark-32.png",
        "dark": "icons/plasma-32.png",
        "size": 32
      },
      {
        "light": "icons/plasma-dark-48.png",
        "dark": "icons/plasma-48.png",
        "size": 48
      },
      {
        "light": "icons/plasma-dark-128.png",
        "dark": "icons/plasma-128.png",
        "size": 128
      }
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "constants.js",
        "utils.js",
        "content-utils.js",
        "content-script.js"
      ],
      "run_at": "document_start",
      "all_frames": true,
      "match_about_blank": true
    }
  ],
  "web_accessible_resources": [
    {
      "matches": [
        "*://*/*"
      ],
      "resources": [
        "page-script.js"
      ]
    }
  ],
  "options_ui": {
    "page": "options.html"
  },
  "permissions": [
    "nativeMessaging",
    "notifications",
    "storage",
    "downloads",
    "tabs",
    "scripting",
    "contextMenus",
    "favicon",
    "history"
  ],
  "host_permissions": [
    "*://*/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "plasma-browser-integration@kde.org",
      "strict_min_version": "58.0"
    }
  }
}