Examine source code of Markdown Sticky Notes

{
  "manifest_version": 3,
  "name": "Markdown Sticky Notes",
  "description": "Markdown Sticky Notes web extension",
  "version": "0.2.7",
  "short_name": "markdown-sticky-notes",
  "icons": {
    "16": "icon/notes16.png",
    "32": "icon/notes32.png",
    "64": "icon/notes64.png",
    "128": "icon/notes128.png"
  },
  "commands": {
    "create-note": {
      "suggested_key": {
        "default": "Alt+M"
      },
      "description": "Run \"create-note\" on the current page."
    }
  },
  "action": {},
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "fonts/**/*"
      ],
      "matches": [
        "*://*/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "qwstudio0@gmail.com"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "open_in_tab": true,
    "browser_style": true,
    "page": "options.html"
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "css": [
        "content-scripts/content.css"
      ],
      "js": [
        "content-scripts/content.js"
      ]
    }
  ]
}