AI Icebreakers feature completed and rolled out to all users as premium, AI feature

[jordanh]

Issue - Enhancement

Some time ago, Bartosz had created a hack week project that allowed the customization of Icebreaker prompts using AI. Let's make this work production ready and roll it out as a premium feature.

Acceptance Criteria (optional)

Paying users can:

• Adjust prompts by using quick action buttons (let's discuss final copy/prompts for these buttons)
  • Do our best in the prompt engineering to make sure generated content is safe for work

Estimated effort: X points (see CONTRIBUTING.md)