## What does this PR do?
- Redesigns and streamlines the onboarding flow for personal, team, and organization accounts
- Consolidates shared components and improves code organization
- Adds browser preview for better user experience during onboarding
- Simplifies the personal onboarding flow by removing the video integration step
- Enhances team onboarding with CSV upload functionality
## Visual Demo (For contributors especially)
#### Image Demo:
- The PR adds a new browser preview component that shows users how their profile/team will look during onboarding
- Redesigned UI with a more consistent layout across all onboarding steps
- Improved mobile responsiveness with better component organization
## 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?
1. Test the complete onboarding flow for personal accounts:
- Start at `/onboarding/getting-started`
- Proceed through personal details and calendar setup
- Verify the flow completes successfully
2. Test the team onboarding flow:
- Start at `/onboarding/getting-started` and select team
- Complete team details
- Test the invite options including CSV upload
- Verify team creation works correctly
3. Test the organization onboarding flow:
- Start at `/onboarding/getting-started` and select organization
- Complete organization details and branding
- Test member invitations
- Verify organization creation works correctly
4. Verify browser preview functionality:
- Check that the preview updates in real-time as you enter information
- Confirm it displays correctly on different screen sizes
## 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
