Move SECURITY.md to github security issues

[directionless]

In office hours today, we discussed that we've started using https://github.com/osquery/osquery/security to track things. As such, we should backfill that with content from SECURITY.md

[directionless]

I've created (draft) security issues for the four CVEs noted in SECURITY.md. It would be great if someone could sanity check them. I left them pretty plain.

Not sure if we want to create them for the remainder or not

[theopolis]

Let’s copy them but not move them. Having them in the repo contents is helpful for people looking at the content outside of GutHub.

[directionless]

Let’s copy them but not move them. Having them in the repo contents is helpful for people looking at the content outside of GitHub.

Are you imagining we'll maintain both going forward?

[theopolis]

Yeap!