Add SECURITY.md file

[luislucena16]

Description

SECURITY.md files are often added to GitHub repositories as part of software security best practices.

Motivation

these files are used to provide relevant information about security policies, vulnerability disclosure procedures and any other security-related information for the project.

Additional Information

SECURITY.md file is useful for project collaborators and external security researchers, as they help to establish clear and efficient communication in case of security problems.