Add new EmailValidation class for e-mail address validation

[Evilazaro]

Feature Request

Implement a new EmailValidation class designed to validate e-mail addresses within the project. This should include:

• Robust format checking using regular expressions.
• Method(s) to return validation status (valid/invalid).
• Clear error messaging for invalid e-mails.
• Support for both standard and edge-case e-mail formats.

Use Cases:

• Used during user registration or profile updates to ensure validity of e-mail input.
• Can be extended for additional validation logic in future.

Additional Notes

• Please include unit tests to ensure all functionalities work correctly and edge cases are covered.
• Ensure the class is well-documented for integration and maintenance.