Implement Field Validation for Login and Registration on Backend

Task Description: Implement the following validation checks in the backend for the user login and registration process:

For the user login and registration process, implement validation checks for each input field with the following criteria:

• Email Field Validation: Ensure the input in the email field matches standard email formatting..
• Password Requirements: Implement basic complexity requirements for the password. The password must contain: -At least one numeral. -At least one uppercase letter. -At least six characters in total.
• Password Confirmation: During registration, validate that the 'password' and 'confirm password' fields match exactly.
• Additionally, update the file paths to ensure the correct display of our company logo across the login and registration pages.

Acceptance Criteria:

• The email field rejects input that does not match email formatting standards.
• Password must contain at least one number and one uppercase letter, and be at least 6 characters long!.
• Password confirmation field must exactly match the password field before allowing the registration to proceed.
• The company logo is correctly displayed on both the login and registration pages, indicating the file path has been correctly updated.

Notes: Any questions for backend put directly to Dawid Mielewczyk, any questions for validation put directly to Camille Nadir