Add new framework dependencies needed for the Gin-to-Kratos migration:
- go-kratos/kratos/v2 (HTTP/gRPC transport, config, middleware, JWT auth)
- google/wire (compile-time dependency injection)
- ThreeDotsLabs/watermill + watermill-sql/v2 (event-driven CQRS)
- gorm.io/gorm + gorm.io/driver/postgres (PostgreSQL ORM)
The old Gin/Swagger deps remain as direct deps since existing code still
imports them. They will be removed in later migration tasks when code is
rewritten. Blank imports in internal/deps.go ensure go mod tidy keeps
the new deps until actual code imports them directly.
