feature request: Verification Email with Magic Link

[SeanBannister]

What problem did you meet?

The current verification email sent during registration contains a 6-digit code, requiring user to manually enter it to complete verification. This can be inconvenient and prone to errors.

Describe what you'd like Logto to have

Add an option to include a clickable verification link (magic link) in emails instead of (or alongside) the 6-digit code.