For local development, remove the sendgrid dependency and fallback to nodemailer email using gmail

[smaharj1]

Is your feature request related to a problem? Please describe. Currently, if the developer wants to register a new admin account, it doesn't let it do that because sendgrid API keys are needed. Remove this dependency for local, and switch to using an identical emailService which uses Nodemailer (Gmail option preferred) since Nodemailer is free. Maybe feature flag this property

Describe the solution you'd like Be able to create users without email hassles for local development

Additional context Add any other context or screenshots about the feature request here.