## What does this PR do?
Creates new onboarding UI components for the user onboarding flow, including:
- `OnboardingCard` - A reusable card component with title, subtitle, content, and footer sections
- `OnboardingLayout` - A layout component with progress indicators and sign-out functionality
- `OnboardingBrowserView` - A browser preview showing how the user's booking page will look
- `OnboardingCalendarBrowserView` - A calendar preview showing sample events
- `OnboardingInviteBrowserView` - A preview of the team invitation email
- Enhanced `PlanIcon` component with new variants and animations for organization and team plans
## Visual Demo (For contributors especially)
#### Image Demo:
The PR adds several visual components for the onboarding flow, including browser previews, calendar views, and animated plan icons with concentric rings and user avatars.
## Mandatory Tasks (DO NOT REMOVE)
- [x] I have self-reviewed the code.
- [x] I have updated the developer docs in /docs if this PR makes changes that would require a documentation change. If N/A, write N/A here and check the checkbox.
- [x] I confirm automated tests are in place that prove my fix is effective or that my feature works.
## How should this be tested?
- Navigate to the onboarding flow to see the new components in action
- Test the layout with different screen sizes to ensure responsive behavior
- Verify that the browser previews render correctly with sample data
- Check that the plan icon animations work properly for different variants (single, team, organization)
- Ensure the calendar view displays sample events correctly
## Checklist
- I have read the [contributing guide](https://github.com/calcom/cal.com/blob/main/CONTRIBUTING.md)
- My code follows the style guidelines of this project
- I have commented my code, particularly in hard-to-understand areas
- I have checked if my changes generate no new warnings
sean-brydon
52e27bab53