Add email address to Person

[Japoivvb]

Describe the solution you'd like
Currently, the "Person" model lacks an email field and validation. To improve data handling, we should:

• Add a new email field to the "Person" model.
• Implement regex validation to ensure that the email format is correct.
• Update the user interface to handle email input validation when adding or updating a person.

Additional context

• Email Field:
  Add an email attribute to the "Person" class with appropriate getter and setter methods.

• Regex Validation:
  Use the following regex pattern to validate email format:
  String emailRegex = "^[a-zA-Z0-9_+&-]+(?:\.[a-zA-Z0-9_+&-]+)*@(?:[a-zA-Z0-9-]+\.)+[a-zA-Z]{2,7}$";

• Menu or App Changes:
  Update the form or input pane in the app or menu to include the email field
  When adding or editing a person, validate the email using the regex. If the email is invalid, show an error message like "Invalid email format."

• Error Handling in the App:
  If the email fails validation, prevent the user from saving or updating the record and display a message asking them to correct the email format.

Expected sample