Initialise CRUD routes for user service

[jayjay19630]

Adds microservice folder structure and implements basic CRUD API as follows:

• /cmd
  • /command
• /internal
  • /handlers
  • /models
  • /repositories
  • /routers

Feel free to comment on this structure (since we will likely reuse it for other microservices as well).

[hjungwoo01]

LGTM

[Copilot]

Pull Request Overview

This PR establishes a clean microservice architecture for the user service by implementing basic CRUD operations following a layered design pattern. The implementation provides a foundation that can be reused across other microservices in the system.

• Implements complete CRUD API endpoints for user management (create, read, update, delete)
• Establishes a clean separation of concerns with handlers, repositories, models, and routers
• Replaces stub authentication endpoints with proper database-backed user operations

Reviewed Changes

Copilot reviewed 6 out of 8 changed files in this pull request and generated 10 comments.

Show a summary per file

File	Description
services/user/internal/routers/user_routes.go	Defines REST API routes for user CRUD operations
services/user/internal/repositories/user_repository.go	Implements database operations using GORM with proper error handling
services/user/internal/models/user.go	Defines User model with GORM annotations for database mapping
services/user/internal/handlers/user_crud_handler.go	Implements HTTP handlers for CRUD operations with JSON serialization
services/user/go.mod	Adds GORM and PostgreSQL driver dependencies
services/user/cmd/server/main.go	Updates main server to use new CRUD handlers and database connection

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[josejhkim]

LGTM