handle add custom domain

Controller:

github.com/raghavyuva/nixopus-api/internal/features/domain/controller.(*DomainsController).HandleAddCustomDomain

Middlewares:

• github.com/go-fuego/fuego.defaultLogger.middleware
• github.com/raghavyuva/nixopus-api/internal/routes.(*Router).SetupRoutes.(*Router).setupAuthentication.func2
• github.com/raghavyuva/nixopus-api/internal/routes.(*Router).applyMiddleware.func1
• github.com/raghavyuva/nixopus-api/internal/routes.(*Router).applyMiddleware.func2
• github.com/raghavyuva/nixopus-api/internal/routes.(*Router).applyMiddleware.func3