Refactor Contact Logic into Reusable Package

[yacosta738]

Description:

The contact functionality needs to be refactored into a modular and reusable package/library. This will allow its reuse across multiple applications (as services/containers) without duplication.

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Context:

Location: @server/engine/src/main/kotlin/com/cvix/contact/

Purpose:

• The contact service handles contact form submissions with external integrations, such as HCaptcha.

Components:

1. Core Functionalities:
   • Commands: ContactSender, SendContactCommand, SendContactCommandHandler.
   • Domain: ContactData, CaptchaValidator, ContactNotifier, ContactException.
2. Infrastructure:
   • Configurations: ContactProperties, WebClientConfig.
   • External Integrations: HCaptchaClient, N8nContactClient.
3. HTTP Layer:
   • ContactController, SendContactRequest, SendContactResponse.

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Tasks:

1. Modularization:
   • Move the above components into a new contact-service package.
2. Reusable Interfaces:
   • Expose clean APIs for interacting with the contact-service.
3. Test Coverage:
   • Ensure new package is fully covered by tests.
4. Documentation:
   • Document the new module with setup steps and usage instructions.

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Acceptance Criteria:

1. All components listed above are moved to a dedicated package.
2. APIs are exposed for clean interaction.
3. Test coverage and documentation are complete.
4. Backward compatibility with existing services (during migration).

[linear]

COD-105