Moved isTrueFromDotEnv to logger.js and updated its usage. Simplified logger import and instantiation across modules. Added errors.js for centralized error exports. Set default error code in DefaultError. Cleaned up unused imports in utils.js.
Introduces GET /users/:id endpoint with validation schema, adds tests for user and register routes, and applies security middlewares (helmet, hpp, cors) to the server. Also adds ESLint configuration and updates logger with linting comments.
