Opt-in to terms and marketing

[Adal3n3]

Signup initial screen for opting-in T&C and marketing email:

[Adal3n3]

We will keep these Terms and Marketing checkboxes for all regions. no design changes.

[calvin-codecov]

• Continue to use react-hook-form for form
• zod email validation
• validation of form values
• use email and name to prefill if available
• based on feature flag, split from personal/business flow
• check on whole "onboarding user" flow up until you reach org page

Notes:

• all fields are required except email opt in

Estimate of work: ~2 days