Examine source code of Chilly Connect

{
  "manifest_version": 3,
  "name": "Chilly Connect",
  "version": "2.1.0",
  "description": "Per-tab proxy, multi-proxy routing, per-site rules, auto-failover, kill switch, bandwidth tracking and WebRTC leak test. Saved locally. Privacy: chillyproxy.com/privacy-policy",
  "homepage_url": "https://chillyproxy.com/tool-chilly-extension",
  "permissions": [
    "storage",
    "proxy",
    "privacy",
    "scripting",
    "tabs",
    "webNavigation",
    "webRequest",
    "alarms",
    "notifications",
    "webRequestBlocking"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "ext-api.js",
      "pac.js",
      "parse-proxy.js",
      "proxy-verify.js",
      "per-tab.js",
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://chillyproxy.com/tool-bandwidth-estimator*",
        "https://www.chillyproxy.com/tool-bandwidth-estimator*"
      ],
      "js": [
        "content-bandwidth-bridge.js"
      ],
      "run_at": "document_start"
    }
  ],
  "action": {
    "default_title": "Chilly Connect",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "chilly-proxy@chillyproxies.com",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Alt+Shift+P"
      },
      "description": "Open Chilly Connect"
    },
    "toggle-connection": {
      "suggested_key": {
        "default": "Alt+Shift+C"
      },
      "description": "Connect or disconnect"
    },
    "next-proxy": {
      "suggested_key": {
        "default": "Alt+Shift+N"
      },
      "description": "Switch to the next proxy"
    }
  },
  "incognito": "spanning"
}