Milestone M27 - webhook, text-only button and more

Let's go through what we got done in Milestone M27 (Dec 30 - Jan 12).

Features:

• Previously, the chat widget's text-only button support was unavailable on mobile browsers. This functionality has now been added.

• A ticket transcript download URL has been included in webhook calls. If your systems utilize webhooks, you can now automate transcript downloads.

Bug Fixes:

• Resolved a rare crash occurring in the widget.

• Fixed issues with the image preview modal in the widget.

• Addressed a crash related to the profile menu.

• Resolved an issue where widget styles did not load smoothly on mobile browsers.

• Fixed redirection issues with the GitHub integration.