Enhanced onboarding, upgraded comment workflows, & expanded media support

✅ Improved Onboarding

• New onboarding email after signup to guide users instantly.

• Browser extension promoted in the header and footer for quick access.

🧵 Comment UX Upgrades

• Replies now grouped under each comment with a visual indicator.

• Feedback can now be assigned to a specific team member with grouped notifications.

• Prioritization of comments added to notify teams about critical issues first.

🎥 Format Support

• Added support for MOV, GIFs, and more video types in reviews.