[EPIC] - Add Notify Me of Update Button

[rbaker26]

Description:
As a user, I want to be able to subscribe to updates about the site, so that I know when new features are released.

To-Do List

• Add a floating Button to the bottom right corner of the screen
• Create a form to allow users to subscribe to updates
• Create a email template to contain the updates
  • GDPR Compliance / Unsubscribe Feature
• Entity Framework Core Models / Contexts Updates
• Azure MS SQL Server Updates
• Azure SMTP Email Server
• OWASP Data Security Checks
• Admin Portal for Sending Update Emails from WebApp

Definition of Done
A user can subscribe and receive emails regarding updates.

Screenshots (optional)