Implement MFA, Enhance Security Features, and Refactor Application Structure

[aalamu]

Enhancements:

Implement Multifactor Authentication (MFA) and standard authentication features to enhance user security.

• Add cache (Redis) service details in application.properties.
• Create exceptions related to security, including code verification, MFA verification, authentication, and generic reusable exceptions.

Configuration:

• Develop configuration and properties classes for managing cache, JWT, token, and MFA configurations.
• Add cache keys constants.

Refactoring:

• Reorganize classes by moving them to appropriate packages.

Data Handling:

• Create DTO, request, and response classes for data transportation and interaction.
• Develop service and repository classes for entities like Country, Member, and ProfileToken.

Security Services:

• Create Token Service for handling JWT token signing, encoding, and decoding.
• Implement AuthenticationManager for managing authentication processes.
• Develop JWT authenticator filter for handling authenticated and authorized requests.
• Create OTP and Password services for OTP code generation/verification and password encoding.
• Establish ProfileTokenRepository for managing password reset processes.

Utilities & Documentation:

• Add comprehensive documentation to classes and methods.
• Implement Token Util for JWT token-related functionalities.