[api] [auth] [ui] Add support for API and UI email verication when EMAIL_VERIFICATION_REQUIRED is True

[signebedi]

This should change the initial emails sent to users when they create their own accounts, set them initially to inactive, and add a UI and API route to verify their account with an OTP.

[signebedi]

libreforms-fastapi/libreforms_fastapi/app/__init__.py

Lines 5193 to 5197 in f58851e

	# Verify email
	# @app.get("/ui/auth/verify_email", include_in_schema=False)
	# async def ui_auth_verify_email():
	# if not config.UI_ENABLED:
	# raise HTTPException(status_code=404, detail="This page does not exist")