Risk-based signup form with email OTP verification with reCAPTCHA v3 template

This signup form with risk-based and custom API includes:

1. An initial step that requires the full name, email and password.
   
2. An invisible reCAPTCHA widget that issues a score based on suspicious activity.
3. A flow that checks the reCAPTCHA v3 score, the highest score is of 0.9.
4. If the score is less than or equal to 0.5, it generates an OTP via email and requires the verification code before creating the account.
5. If the score is greater than 0.5, it creates the account and issues a token to automatically log the user in.

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