BadRequestError creates a CustomError with a bad request status code and a custom message.

InternalServerError creates a CustomError with an internal server error status code and a custom message.

NewCustomError creates and returns a pointer to a new CustomError.

NotFoundError creates a CustomError with a not found status code and a custom message.

ReportDbError reports database errors, returning a CustomError based on the error type.

CustomError represents a custom error structure with a message, HTTP status code, and a reason.