Save Website as Image de igorlogius

SYNOPSIS
Adds a toolbar button that when clicked will take a full capture of the current website
if possible as one JPEG. If the size of the generated image exceeds the browsers internal canvas limit
the addon will instead save the website as a series of images inside a zip archive (aka. comic book zip-archive )

DEMO VIDEO
https://github.com/user-attachments/assets/7f0d510b-bbb4-496a-820d-f76a44f7c808

REQUIRED PERMISSIONS
- activeTab: used to get the tab URL for the filename and the page dimensions
- all_urls: necessary to use the tabs.captureTab method (ref. https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/tabs/captureTab )
- downloads: used to reliably download the captured image/cbz file