docs: add security policy

[JeremyFriesenGitHub]

Search checkbox

• Have you searched for similar issues?

Platforms

all

Description

• Since the organization prides itself on using GitHub, a security policy also needs to be setup as well. A security policy would help people report security vulnerabilities from the repo.

• GitHub offers some advice for getting a policy setup here.

• This kind of policy should be coordinated with other members from cuHacking, in case of security breaches/incidents and to also help establish proper plans of action.